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Home My WebLink About13 ADOPTION OC REGIONAL WATERT =�� Agenda items dRamw8d: -� AGENDA REPORT fit Manager Finance Director ti MEETING DATE: FIESRUARY d, 2007 TO. WILLIAM A. HUSTON, CITY Y MANAGER FROM: PUBLIC WORKS DEPARTMENT /ENGINEERING DIVISION SUBJECT: ADOPTION OF THE ORANGE COUNTY G EGIO�IAL WATER AND WASTEWATER MULTI -ILIA IRD MITIGATION PLAN SUMMARY Federal law requires the City to prepare a hazard mitigation ,plan in order to remain eligible for Federal pre and post disaster mitigation funds. The Orange County regional Water and Wastewater Multi - Hazard Mitigation Plan will fulfill the City's requirement with regard to water facilities. Staff is requesting the City Council certify the ,plan and authorize staff to send a letter formally notifying the Municipal Water District of Orange of the City's action. RECOMMENDATION It is recommended that the City Council approve the Orange County Regional Water and Wastewater Multi -- Hazard Mitigation Flan subject to the incorporation of comments, if any, by the State Office of Emergency Services and the Federal (emergency Management Agency upon completion of their Teview, and direct staff to send a letter to the iii unicipai Water District of Orange County certifying the adoption of the plan. FISCAL IMPACT The approval of this plan wild make the City water facilities eligible for federal grant funding should the need arise. BACKGROUND In October 2000 the Federal Disaster mitigation Action of 2000 (DMA) authorized a program for pre - disaster mitigation, streamlined the administration of disaster relief, and placed limits on federal disaster assistance costs from natural hazards. A key requirement of DMA 2000 is a requirement for local agencies and states to develop Hazard Mitigation Plans to reduce risks from natural hazards within their jurisdictions. In 2004, The Federal Emergency Management Agency (FENIA) began restricting grant applications for pre and post- disasteT .hazard mitigation funds for any agency not covered by an approved Hazard Mitigation Plan. These funds are available for the purpose of mitigating damage to public facilities due to a natural disaster — fire, flood, earthquakes, landslides, etc. For example, a retrofit of a water treatment plant to protect against earthquakes would be eligible, but only if a hazard Mitigation Flan has been previously prepared that identified the need for the retrofit. Adoption of the Orange County Regional Water and Wastewater Multi - Hazard Mitigation Plan February 5, 2007 Page 2 (Tustin and 19 other participating water and wastewater agencies, has been working with the Municipal Water !District of Orange County (MWDOC) to complete the Orange County Regional Water and Wastewater Multi- Hazard Mitigation Flan. The complete list of hazards profiled for Orange County included: 0 Tsunamis 0 Contamination 0 Dam Failure 0 ;Drought /Extreme pleat o Earthquake o Liquefaction o Expansive soils o Floods /Coastal Storms 0 dHigh winds /Santa Ana winds (resulting in power outages) 0 Landslide/mudslide O (Land Subsidence 0 T ornadoNVater Spout Wildfire /Urban Fire, and Human caused hazards The hazard evaluation process identified certain vulnerabilities at various City water facility locations and identified earthquake, fire, high winds, and flood as having 'the highest potential to create damage to facilities. Where it was technically and economically feasible, specific mitigation measures to reduce ,potential damage to these facilities were also identified. Many of the mitigation measures are procedural in nature and can be accommodated during routine operations and maintenance activities. Where specific projects are required, the proj Adoption of the Orange County Regional Water and Wastewater MuiV-Hazard lVitigation Plan February 5, 2007 Page 3 Upon completion and acceptance by local, state and federal entities, the Water and Wastewater Mufti-Hazard Mitigation Plan will be incorporated into a Citywide Hazard Mitigation Plan. Staff is currently eValUating consultant proposals to prepare the city -wide hazard mitigation plan and anticipates completion of this project by the end of FY 07 -08. �__ " p Tim D. Serlet Director of PubNc Works /City Engineer Attachments: Draft Letter Tustin Water Hazard Mitigation Phan J l A Veeyers istrative Services manager S: \City Council Items\2007 Council itemsWpproval of OC Regional water Haz Mit Plan.doc Date lVls. Kelly Hubbard, Coordinator Water Emergency 'Response Organization of Orange County Municipal Water 'District of Orange County 10500 Ell °s Avenue Fountain valley, CA 927125 Subjects Adoption of the Orange County Regional VV�iter and Waslk wafer Multi- Hazard Mitigation Plan Dear Ms. Hubbard: The City of Dustin recognizes the natural mood manmade hazards !hat can affect the Orange County water and wastewater community. Due to the potential affects those disasters can have on our ability to provide water services to our customers we determined it was of benefit to par6.ipate in tht) Orange County Regional Water and Wastewater Multi - Hazard 'Mitigation The City of Tustin participated in the year long process with the Hazard ]Mitigation Working Group to identify critical infrastructure that is vulnerable to natural hazards. Cased on thin mformaliO d developed both regional and individual agency goals, objectives and actions were prepared The Pre -Draft Hazard Mitigation Mara was advertlsod and shared with thy: public at flange meetings. The fiiwl draft plan was presemled to our City Council on February 5, 2007 for review and adop'lion as our official agency water hazard mitigation plan. This letter serves to document that the City Council of the City of Tustin adopted the plan on February 5, 2007 with recognition that the State Office of Emergency Services and the Federal Emergency Management Agency may suggest required changes to the plan, which will be incorporated. Sincerely, William A. Huston City Manager SAAdministration \Emergency Services \DMA 2000 \11azard Mitigation Projects\Approval Letter.doc 0 FINAL DRAFT IREPORT ORANGE COUNTY REGIONAL WATER AND WASTEWATER MULTI- HAZARD MITIGATION PLAN ORANGE COUNTY, CALIFORNIA PREPARED FOR: N] UNICIPAL � /AIATER DISTRICT OF (0 RANGE COUNTY URS PROJECT No. 27655113.07000 CIFPTEI'J]BER 22, 2095 0 FINAL - ORAFT REPORT 0 ORANGE COUNTY REGIONAL WATER AND WASTEWATER MULTI- HAZARD MITIGATION PLAN ORANGE COUNTY, CALIFORNIA Prepared for Municipal Water District of Orange County 10500 Ellis Avenue Fountain Valley, CA 92728 URS Project No. 276551 13.07000 September 29, 2006 TL-... J r +� 1615 Murray Canyon Road, Suite 1000 San Diego, CA 92108 -4314 619.294.9400 Fax: 619.293.7920 TABLE OF CONTENTS Section 1 Introduction 1.1 Plan Description/Purpose of Plan ................................................. ............................... 11 =1 1.2 Plan Purpose and Authority .......................................................... ............................... 1-2 1.3 Participating Water Jurisdictions Backgrounds ............................ ............................... 1 -3 1.4 Participating Wastewater Jurisdictions ........................... ...........................1 -16 Section 2 Multi-Jurlsdictional Participation 2.1 List of Participating Water Districts and City Public Utilities ............................2 -1 Section 3 Planning Process Documentation 3.1 Description of Each Jurisdiction's Participation in the Planning Process ....................3 -1 3.2 Description of Planning Committee Formation ............................ ............................... 32 3.3 Name of Planning Committee and its Members ........................... ............................... 3 -2 3.4 Hazard Mitigation Working Group Meetings ............................... ............................... 34 3.5 Planning Process Milestones ........................................................ ............................... 3 -5 3.6 Public Involvement ................... ............................... - 3.7 Existing Plans or Studies Reviewed ............................................. ............................... 3_7 Section 4 Risk Assessment 4.1 Overview of the Risk Assessment Process ................................... ............................... 4 -1 4.2 Hazard Identification and Screening ............................................. ............................... 4 -2 4.3 Hazard Profiles ............................................................................. ............................... 4 -7 4.4 Vulnerability Assessment ........................................................... ............................... 4 -43 4.5 Multi - Jurisdictional Assessment ................................................. ............................... 4 -59 Section 5 General Overview of Assets, Goals and Objectives 5.1 Purpose of the Plan ....................................................................... ............................... 5 -1 5.2 Regional Considerations ............................................................... ............................... 5 -3 5.3 Regional Goals and Objectives for Hazard Mitigation Planning for Water ...............5 -4 5.4 Regional Goals and5 Objectives for Hazard Mitigation Planning for Wastewater.....5 -7 5.5 Implementation Through Existing Programs ....................... ...........................5 -10 5.6 Buena Park, City of- Objectives, Goals and Actions ................ ............................... 5 -13 5.7 El Toro Water District - Objectives, Goals and Actions ............ ............................... 5 -23 5.8 Garden Grove, City of- Objectives, Goals and Actions ............ ............................... 5 -38 5.9 Laguna Beach County Water District - Objectives, Goals and Actions ................... 5 -46 5.10 La Habra, City of- Objective, Goals and Actions ..................... ............................... 5 -54 5.11 Mesa Consolidated Water District Objective, Goals and Actions ........................... 5 -63 5.12 Moulton Niguel Water District - Objective, Goals and Actions ............................... 5,71_ 5.13 Municipal Water District of Orange County- Objective, Goals and Actions ........... 5 -81 5.14 Newport Beach, City of - Objective, Goals and Actions ........... ............................... 5 -88 5.15 Orange County Sanitation District - Objectives, Goals and Actions ...................... 55100 5.16 Orange County Water District - Objective, Goals and Actions .............................. 5 -106 5.17 Orange, City of- Objective, Goals and Actions ....................... ............................... 5 -112 5.18 Santa Margarita Water District - Objective, Goals and Actions ............................. 5 -120 M: \WeroclSection 1 HM.doc\25- Jan- 07\SDG O 0 TABLE OF CONTENTS 5.19 Serrano Water District —Objectives, Goals and Actions .......... ............................... 5 -129 5.20 South Coast Water District — Objective, Goals and Actions .... ............................... 5 -139 5.21 South Orange County Wastewater Authority- Objectives, Goals and Actions ........5 -146 5.22 Trabuco Canyon Water District — Objective, Goals and Actions ... ................... 5 -! 53 5.23 Tustin, City of— Objective, Goals and Actions ........................ ............................... 5 -1.61 5.24 Westminster, City of — Objective, Goals and Actions .............. ............................... 5 -171 5.25 Yorba Linda Water District — Objective, Goals and Actions ...........................5 -180 Section 6 Plan Maintenance 6.1 Monitoring, Evaluating and Updating the Plan ............................ ............................... 6- I Section 7 References Section 8 Appendices tmMAWemc\Section 1 HM.doc\25- Jan- 071SDG ii o a UM MAWemcZeUon 1 HM.doc\25- Jan -07\SDG iii list of Tables and Figures Tables Table 1.3 -1 Existing Water Supply Sources for Water Utilities in Orange County Table 1.3 -2 Sources of Potable Water for OC Retail Agencies by Sub- Region Table 1.3 -3 Orange County Potable Water Demands and Supplies, Current/Future Table 1.3 -4 Existing Potable Water Storage Volume and Portion Available for Emergency Table 1.3 -5 Potable Well Water Production Capacity to Year 2025 by Producer Table 3 -1 Planning Representatives for Participating Jurisdictions Table 4.2.2 -1 Summary of Hazard Identification Results Table 4.2.4 -1 Summary of Hazards Excluded from Hazard Profiling Table 4.3.4.3 -1 Palmer Drought Severity Index Table 4.3.5.3 -1 Partial List of Earthquake Events in the Southern California Region Table 4.3.11.2 -1 Historic Tornado Events in Orange County (1958 -2005) Table 4.4.2 -1 Abbreviation of Costs Table 4.4.2 -2 Summary of Assets Table 4.4.2 -3 Moderate Earthquake Threat — Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -4 High Earthquake Threat - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -5 Extreme Earthquake Threat - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -6 500 Year Flood Plain - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -7 Slope over 25 %: Landslide Hazard - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -8 Liquefaction — Moderate - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -9 Liquefaction — High - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -10 Liquefaction — Very High - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -11 Low Fire Threat - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -12 High Fire Threat - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -13 Extreme Fire Threat - Inventory of Critical Facilities and Infrastructure of Exposure Value by Jurisdiction Table 4.4.2 -14 Moderate to Extreme Earthquake — Inventory of Potable Water Line and Waste Water Line by Jurisdiction Table 4.4.2 -15 Flood: 100 Year and 500 Year — Inventory of Potable Water Line and Waste Water Line by Jurisdiction Table 4.4.2 -16 Landslide — Inventory of Potable Water Line and Waste Water Line by Jurisdiction UM MAWemcZeUon 1 HM.doc\25- Jan -07\SDG iii list of Tables and Figures Table 4.4.2 -17 Moderate to Very High Liquefaction — Inventory of Potable Water Line and Waste Water Line by Jurisdiction Table 4.4.2 -18 Low to Extreme Wildlife /Structure Fire — Inventory of Potable Water Line and Waste Water Line by Jurisdiction Table 4.5.1.1 -1 Characteristics of Imported Geologic Faults in Orange County, CA Table 4.4.2.2 -1 Possible Loss of Local Water Supply due to Earthquake in/near Orange County by Retail Agency as a Percentage of Normal Local Supply Rate Table 4.4.2.2 -2 Possible Water Shortages in Event of a Major Earthquake in Orange County by Retail Table 5.8.3 -1 Water Agency Table 5.5 -1 Joint Loss Estimation Table Table 5.5 -2 MET Loss Estimation Table Table 5.6.2 -1 City of Buena Park Legal and Regulatory Capability Table 5.6.3 -1 City of Buena Park Administrative and Technical Capacity Table 5.6.4 -1 City of Buena Park Fiscal Capability Table 5.6.5 -1 City of Buena Park Local Mitigation Capability Assessment Table 5.6 -1 City of Buena Park Loss Estimation Table Table 5.7.3 -1 El Toro Water District Legal and Regulatory Capability Table 5.7.4 -1 El Toro Water District Administrative and Technical Capacity Table 5.7.5 -1 El Toro Water District Fiscal Capability Table 5.7.6 -1 El Toro Water District Local Mitigation Capability Assessment Table 5.7 -1 El Toro Water District Loss Estimation Table Table 5.8.3 -1 City of Garden Grove Legal and Regulatory Capability Table 5.8.4 -1 City of Garden Grove Administrative and Technical Capacity Table 5.8.5 -1 City of Garden Grove Fiscal Capability Table 5.8 -1 City of Garden Grove Loss Estimation Table Table 5.9.3 -1 Laguna Beach County Water District Legal and Regulatory Capability Table 5.9.4 -1 Laguna Beach County Water District Administrative and Technical Capacity Table 5.95 -1 Laguna Beach County Water District Fiscal Capability Table 5.9.6 -1 Laguna Beach County Water District Local Mitigation Capability Assessment Table 5.9 -1 Laguna Beach County Water District Loss Estimation Table Table 5.10.2 -1 City of La Habra Legal and Regulatory Capability Table 5.10.3 -1 City of La Habra Administrative and Technical Capacity Table 5.10.4 -1 City of La Habra Fiscal. Capability Table 5.10.5 -1 City of La Habra Local Mitigation Capability Assessment Table 5.10 -1 City of La Habra Loss Estimation Table Table 5.11.2 -1 Mesa Consolidated Water District Legal and Regulatory Capability Table 5.11.3 -1 Mesa Consolidated Water District Administrative and Technical Capacity Table 5.11.4 -1 Mesa Consolidated Water District Fiscal Capability Table 5.11 -1 Mesa Consolidated Water District Loss Estimation Table Table 5.12.3 -1 Moulton Niguel Water District Legal and Regulatory Capability Table 5.12.4 -1 Moulton Niguel Water District Administrative and Technical Capacity UM MAWeroc\Section 1 HM.doc\25- Jan- 071SDG iv 4 List of Tables and Figures Table 5.12.5 -1 Moulton Niguel Water District Fiscal Capability Table 5.12.6 -1 Moulton Niguel Water District Local Mitigation Capability Assessment Table 5.12 -1 Moulton Niguel Water District Loss Estimation Table Table 5.13.3 -1 Municipal Water District of Orange County Legal and Regulatory Capability Table 5.13.4 -1 Municipal Water District of Orange County Administrative and Technical Capacity Table 5.13.5 -1 Municipal Water District of Orange County Fiscal Capability Table 5.13.6 -1 Municipal Water District of Orange County Local Mitigation Capability Assessment Table 5.13 -1 Municipal Water District of Orange County Loss Estimation Table Table 5.14.3 -1 City of Newport Beach Legal and Regulatory Capability Table 5.14.4 -1 City of Newport Beach Administrative and Technical Capacity Table 5.14.5 -1 City of Newport Beach Fiscal Capability Table 5.14.6.1 -1 City of Newport Beach Local Mitigation Capability Assessment Table 5.14 -1 City of Newport Beach Loss Estimation Table Table 5.15.2 -1 Orange County Sanitation District Legal and Regulatory Capability Table 5.15.3 -1 Orange County Sanitation District Administrative and Technical Capacity Table 5.15.4 -1 Orange County Sanitation District Fiscal Capability Table 5.15.5 -1 Orange County Sanitation District Local Mitigation Capability Assessment Table 5,15 -1 Orange County Sanitation District Loss Estimation Table Table 5.16.2 -1 Orange County Water District Legal and Regulatory Capability Table 5.16.3 -1 Orange County Water District Administrative and Technical Capacity Table 5.16.4 -1 Orange County Water District Fiscal Capability Table 5.16 Orange County Water District Local Mitigation Capability Assessment Table 5.16 -1 Orange County Water District Loss Estimation Table Table 5.17.2 -1 City of Orange Legal and Regulatory Capability Table 5.17.3 -1 City of Orange Administrative and Technical Capacity Table 5.17.4 -1 City of Orange Fiscal Capability Table 5.17.5 -1 City of Orange Local Mitigation Capability Assessment Table 5.17 -1 City of Orange Loss Estimation Table Table 5.18.2.1 -1 Santa Margarita Water District Legal and Regulatory Capability Table 5.18.3 -1 Santa Margarita Water District Administrative and Technical Capacity Table 5.18.4 -1 Santa Margarita Water District Fiscal Capability Table 5.18.5 -1 Santa Margarita Water District Local Mitigation Capability Assessment Table 5.18 -1 Santa Margarita Water District Loss Estimation Table Table 5.19.2 -1 Serrano Water District Legal and Regulatory Capability Table 5.19.3 -1 Serrano Water District Administrative and Technical Capacity Table 5.19.4 -1 Serrano Water District Fiscal Capability Table 5.19.5 -1 Serrano Water District Local Mitigation Capability Assessment Table 5.19 -1 Serrano Water District Loss Estimation Table Table 5.20.2 -1 South Coast Water District Legal and Regulatory Capability Table 5.20.3 -1 South Coast Water District Administrative and Technical Capacity Table 5.20.4 -1 South Coast Water District Fiscal Capability Um M:1Weroc \Sec[icn 1 HM.doc\25- Jan -07\SDG v List of Tables and Figures Table 5.20.5 -1 South Coast Water District Local Mitigation Capability Assessment Table 5.20 -1 South Coast Water District Loss Estimation Table Table 5.21.3 -1 South Orange County Wastewater Authority Legal and Regulatory Capability Table 5.21.4 -1 South Orange County Wastewater Authority Administrative and Technical Capacity Table 5.21.5 -1 South Orange County Wastewater Authority Water District Capability Table 5.21 South Orange County Wastewater Authority Local Mitigation Capability Assessment Table 5.21 -1 South Orange County Wastewater Authority Loss Estimation Table Table 5.22.3 -1 Trabuco Canyon Water District Legal and Regulatory Capability Table 5.22.4 -1 Trabuco Canyon Water District Administrative and Technical Capacity Table 5.22.5 -1 Trabuco Canyon Water District Fiscal Capability Table 5.22.6 -1 Trabuco Canyon Water District Local Mitigation Capability Assessment Table 5.22 -1 Trabuco Canyon Water District Loss Estimation Table Table 5.23.3 -1 City of Tustin Legal and Regulatory Capability Table 5.23.4 -1 City of Tustin Administrative and Technical Capacity Table 5.23.5 -1 City of Tustin Fiscal Capability Table 5.23.6 -1 City of Tustin Local Mitigation Capability Assessment Table 5.23 -1 City of Tustin Loss Estimation Table Table 5.24.3 -4 City of Westminster Legal and Regulatory Capability Table 5.24.4 -1 City of Westminster Administrative and Technical Capacity Table 5.24.5 -1 City of Westminster Fiscal Capability Table 5.24.6 -1 City of Westminster Local Mitigation Capability Assessment Table 5.24 -1 City of Westminster Loss Estimation Table Table 5.25.4 -1 Yorba Linda Water District Legal and Regulatory Capability Table 5.25.5 -1 Yorba Linda Water District Administrative and Technical Capacity Table 5.25.6 -1 Yorba Linda Water District Fiscal Capability Table 5.25.7 -1 Yorba Linda Water District Local Mitigation Capability Assessment Table 5.25 -1 Yorba Linda Water District Loss Estimation Table M: \Weroc\Section 1 HM.doc125-1an -07\SDG A N List of Tables and Figures Figures Figure 1.3 -1 Orange County Retail Agencies & Regional Water Facilities Figure 1.3 -2 Orange County Retail Agencies & Sub -Areas Figure 1.3.4.1 -1 Orange County Water District Basin Areas Figure 1.4.1.1 -1 Orange County Sanitation District Service Area Figure 1.4.2 -1 SOCWA Regional Wastewater System Figure 2 -2 MWDOC's Service Area and Member Utilities Figure 4.3 -1a Tsunami Inundation Maps for Orange County Figure 4.3 -1 b Tsunami Inundation Maps for Orange County Figure 4.3 -1c Tsunami Inundation Maps for Orange County Figure 4.3 -1 d Tsunami Inundation Maps for Orange County Figure 4.3 -1e Tsunami Inundation Maps for Orange County Figure 4.3 -1 f Tsunami Inundation Maps for Orange County Figure 4.3 -2 Earthquake -Orange County MWDOC Hazard Mitigation Plan Figure 4.3 -3 Liquefaction- Orange County MWDOC Hazard Mitigation Plan Figure 4.3 -4 Flood -Orange County MWDOC Hazard Mitigation Plan Figure 4.3 -5 Slopes Greater Than 25% Landslide - Orange County MWDOC Hazard Mitigation Plan Figure 4.3 -6 Urban/Wildland Fire Threat -Orange County MWDOC Hazard Mitigation Plan Figure 4.4.2.1 -1 Active Geologic Faults in/near Orange County Figure 4.4.2.1 -2 Shaking Pattern Due to a Simulated Earthquake Magnitude 6.9 Newport Inglewood Fault Figure 4.4.2.1 -3 Shaking Pattern Due to a Simulated Earthquake Magnitude 6.8 Peralta Hills Fault Figure 4.4.2.1 -4 Shaking Pattern Due to a Simulated Earthquake Magnitude 7.5 Puente Hells Fault Figure 4.4.2.1 -5 Shaking Pattern Due to a Simulated Earthquake Magnitude 6.6 San Joaquin Hills Fault Figure 4.4.2.1 -6 Shaking Pattern Due to a Simulated Earthquake Magnitude 6.8 Whittier Fault Figure 5.6 -1 Buena Park Water Assets Figure 5.7 -1 El Toro Water District Water Assets Figure 5.8 -1 Garden Grove Water and Wastewater Assets Figure 5.9 -1 Laguna Beach County Water District Water Assets Figure 5.10 -1 La Habra Water Assets Figure 5.11 -1 Mesa Consolidated Water District Water and Wastewater Assets Figure 5.12 -1 Moulton Niguel Water District Water and Wastewater Assets Figure 5.13 -1 MWDOC, Joint and MET Water Assets Figure 5.14 -1 Newport Beach Water and Wastewater Assets Figure 5.15 -1 Orange County Sanitation District Wastewater Assets Figure 5.16 -1 Orange County Water District Water Assets Figure 5.17 -1 City of Orange Water District Figure 5.18 -1 Santa Margarita Water District Water and Wastewater Assets Figure 5.19 -1 South Orange County Wastewater Authority Wastewater Assets URS M:\Weroc \Section 1 HM.doc\25- Jan -D7\SDG vii Q R11313 coll71VT9119 ITEll E-117 "M Figure 5.20 -1 Serrano Canyon Water District Water Assets Figure 5.21 -1 South Coast Water District Water and Wastewater Assets Figure 5.22 -1 City of Tustin Water Assets Figure 5.23 -1 Trabuco Canyon Water District Water Assets Figure 5.24 -1 City of Westminster Water Assets Figure 5.25 -1 Yorba Linda Water and Wastewater Assets LIJsl cu` Acronyms and �'V\bbrpsvoaflons T-UII M: \Weroc \Section 1 HM.doc\25- Jan- 07 \SDG VIII ACOE Army Corps of Engineers ADM Administration AF /yr Acre Feet/ year ALERT Automated Level Evaluation in Real Time AMP Allen- McColioch Pipeline AQMD Air Quality Management District ATM Aufdenkamp Transmission Main BPP Basin Production Percentage CA DHS California Department of Health Services CATIC California Anti - Terrorism information Center CDBG Community Development Block Grants CDF -FRAP California Department of Forestry-Fire and Resource Assessment Program CDFG California Department of Fish and Game CDR Center for Demographic Research CFR Code of Federal Regulations cfs cubic feet per second CGS California Geological Survey CIP Plan Capital Improvement Plan CISN California Integrated Seismic Network COE Corps of Engineers CRS CSSC California Seismic Safety Commission DHS Department of Homeland Security DMA 2000 Disaster Mitigation Act of 2000 EIT Emergency Interties EMS Emergency Medical Services EOC Emergency Operations Center EPA U.S. Environmental Protection Agency EPA- VA Environmental Protection Agency- Vulnerability Assessment EPCRA Emergency Planning and Community- Right -To -Know ERP Emergency Response Plan ESRI a Geographic Information System software development firm FBI Federal Bureau of investigation FEMA Federal Emergency Management Agency FIRM FEMA Flood Insurance Rate Maps GIS Geographic information System gpm gallons per minute GWR System Groundwater Replenishment System HAZUS Mpg 4 -97) HCA (p 4 -125) HMGP Hazard Mitigation Grant Program HMP Hazard Mitigation Plan HMWG Hazard Mitigation Working Group How -to Guide FEMA State and Local Mitigation Planning How -to Guide IRWD Irvine Ranch Water District ISPU Interim Strategic Plan Update JRWSS Joint Regional Water Supply System JTM Joint Regional Transmission Main M: \Weroc \Section 1 HM.doc\25- Jan- 07 \SDG 9X LADWP LAFCO LBCWD LPG LS Mesa MET i Los Angeles Department of Water and Power Local Agency Formation Committee Laguna Beach Canyon Water District Local Planning Groups Lift Station Mesa Consolidated Water District Metropolitan Water District of Southern California UM 51T IJ r,1:1.1?5 91 W TZ- 10[x(5 MNWD Moulton Niguel Water District MOA Memorandum of Agreement MSL Mean Sea Level MWDOC Municipal Water District of Orange County NCCP National Communities Conservation Plan NIMS National Incident Management System NOAA National Oceanographic and Atmospheric Administration NRCS Natural Resources Conservation Service NWD National Weather Service OC Orange County OC -44 name of a potable water service connection OC -88 name of a potable water service connection OCBC Orange County Business Council OCFA Orange County Fire Authority OCJT T F Orange County Joint Terrorism Task Force OC -MAIN table 4.4.3 -2 - additional section 4 insert OCSD Orange County Sanitation District OCWD Orange County Water District OES California Office of Emergency Services OSHA Occupational Safety and Health Administration PDD Presidential Decision Directive PDSI "Palmer Drought Severity Index" PGA Peak Ground Acceleration PP Power Plant PRS Pressure Reducing Station PS Pump Station PSTRG Private Sector Terrorism Response Group PW potable water PWU Participating Water and Wastewater Utilities R -6 Name of a reservoir RDMD County of Orange Resource Development and Management Department RES Reservoir RMS Reservoir Management Systems RWQCB Regional Water Quality Control Board SAMP Special Area Master Plan SAR Santa Ana River SARA Superfund Amendments and Reauthorization Act SAWPA Santa Ana Watershed Project Authority Sc Service Connectors SCADA Supervisory Control and Data Acquisition SCEC Southern California Earthquake Center SCEDC Southern California Earthquake Data Center 7M 117) MAWeroc \Section 1 HM.doc\25- Jan- 07 \SDG X I 0� ro 1 Til II q �0 rl F Z u 7 5 SCP South County Pipeline SCWD South Coast Water District SEMS Standardized Emergency Management System SMWD Santa Margarita Water District SOCWA South Orange County Wastewater Authority SONGS San Onofre Nuclear Generating Station Social, Technical, Administrative, Political, Legal, Economic, and Environmental STAPLEE Considerations TCWD Trabuco Canyon Water District TDS Total Dissolved Solids TEWG Terrorism Early Warning Working Group Title M &22 (potable) California Drinking Water Regulation TRI Toxic Release Inventory TWG Terrorism Working Group USACE United States Army Corps of Engineers USFS United States Forest Service USFWS United States Fish and Wildlife Service USGS United States Geological Survey W.I.S.E. (pg 4 -39) WD Water District WELL Well WEROC Water Emergency Response Organization of Orange County WMD Weapons of Mass Destruction WRP Lab (pg 4 -182) WST Water Storage Tank WTP Water Treatment Plant WUE Water Use Efficiency WW waste water WWTP Wastewater Treatment Plant YLWD Yorba Linda Water District UM M: \Weroc \Section 1 HM.doc\25- Jan- 07\SDG Xl SECTIONONE SECTION 1 INTRODUCTION C) Introduction Across the United States, natural and manmade disasters have led to increasing levels of death, injury, property damage, and interruption of business and government services. The impact on families and individuals can be immense and damages to businesses can result in regional economic consequences. The time, money, and effort to respond to and recover from these disasters divert public resources and attention from other important programs and problems. Correspondingly, the Municipal Water District of Orange County prepared a Hazard Mitigation Plan that identified critical facilities in the county, and mitigation actions in the form of projects and programs to reduce the impact of natural and manmade hazards. This Multi- Hazard Mitigation Plan (the Plan) is being prepared for the MWDOC and 19 other participating water and wastewater utilities (PWU). As such, the Plan focuses on water and wastewater facilities in Orange County, California and identifies mitigation actions to reduce the impact of natural and mamnade hazards on these critical facilities. The Plan was prepared with input from county residents, responsible officials, URS Corporation consultants, and with the support of the State of California Office of Emergency Services (OES) and the Federal Emergency Management Agency (FEMA). The process to develop the Plan included nearly a year of coordination with representatives from MWDOC and all of the PWU. The Plan will guide MWDOC and the PWU toward greater disaster resistance in harmony with the character and needs of the local community. In addition, each agency will utilize current approved planning documents that identify implementation strategies for capital improvement, risk reduction, system upgrades, and operations. These plans complement the Plan and include but are not limited to: All Hazards SEMS/NIMS Emergency Response Plan, Capital Improvement Plans, and Asset Management Plans. In some cases participating agencies have added additional hazard threat information, in place of or in addition to the HAZUS based threat analysis. In most cases this is due to local knowledge, history, and experience. In some cases the only mapping available was a few years old, and so some agencies pointed out new relevant development or changes in their community that could affect the accuracy of a hazard map. In discussions with the California State Office of Emergency Services (OES) this addition of local knowledge and insight is encouraged and considered to be a valid component of threat assessment. The Plan is a working document that will grow and change as our communities do. This means at times participating agencies may identify a higher criticality then noted in this plan, or a redirection of goals based on new information. In consideration of this concept there may be projects or policies that need to be considered that were not included in this document. All formal updates to the plan will be made every five years as required. The concept of the Hazard Mitigation and the Federal Hazard Mitigation Project Grant program is to identify a community's most critical needs and provide risk reduction. Therefore all newly identified concepts are then considered a valid component of a community's hazard mitigation program. This section of the Plan includes an overview of the Plan, a discussion of the Plan's purpose and authority, and a description of the relationship between MWDOC and the PWU within Orange County. M: \Weroc\Section 1 HM.doc125-1an -07\SDG 1 -1 SECTIONONE Introduction 1.1 PLAN DESCRIPTION /PURPOSE OF PLAN Federal legislation has historically provided funding for disaster relief, recovery, and some hazard mitigation planning. The Disaster Mitigation Act of 2000 (DMA 2000) is the latest legislation to improve this planning process (Public Law 106 -390). The new legislation reinforces the importance of mitigation planning and emphasizes planning for disasters before they occur. As such, DMA 2000 establishes a pre - disaster hazard mitigation program and new requirements for the national post - disaster Hazard Mitigation Grant Program (HMGP). Section 322 of DMA 2000 specifically addresses mitigation planning at the state and local levels. It identifies new requirements that allow HMGP funds to be used for planning activities, and increases the amount of HMGP funds available to states that have developed a comprehensive, enhanced mitigation plan prior to a disaster. States and communities must have an approved mitigation plan in place prior to receiving pre or post disaster funds. Local mitigation plans must demonstrate that their proposed mitigation measures are based on a sound planning process that accounts for the risk to and the capabilities of the individual communities. State governments have certain responsibilities for implementing Section 322, including: • Preparing and submitting a standard or enhanced state mitigation plan; • Reviewing and updating the state mitigation plan every three years; • Providing technical assistance and training to local governments to assist them in applying for HMGP grants and in developing local mitigation plans; and • Reviewing and approving local plans if the state is designated a managing state and has an approved enhanced plan. DMA 2000 is intended to facilitate cooperation between state and local authorities, prompting them to work ;together. It encourages and rewards local and state pre- disaster planning and promotes sustainability as a strategy for disaster resistance. This enhanced planning network is intended to enable local and state governments to articulate accurate needs for mitigation, resulting in faster allocation of funding and more effective risk reduction projects. FEMA prepared an Interim Final Rule, published in the Federal Register on February 26, 2002 (44 CFR Parts 201 and 206), which establishes planning and funding criteria for states and local communities. For federal approval, the following criteria must be met during the planning process: • Complete documentation of the planning process. • Detailed risk assessment of hazard exposures in the community. • Comprehensive mitigation strategy, describing goals and objectives, proposed strategies, programs and actions to avoid long -term vulnerabilities. tWMAWeoc\Secbon 1 HM.doc\25- Jan -071SDG 1-2 (D SECTIONONE Introduction • A planned maintenance process will describe the method and schedule of monitoring, evaluating and updating the plan, and the integration of the Hazard Mitigation Plan into other planning mechanisms, • The formal adoption of the Plan by the Board of Directors for each PWU and City Council for each participating city water utility. • Plan review by both State OES and FEMA. The Plan has been prepared to meet FEMA and OES requirements, thus making MWDOC and the PWU eligible for funding and technical assistance for state and federal hazard mitigation programs. 1.2 PLAN PURPOSE AND AUTHORITY As the cost of the damage from natural disasters continues to increase, the PWU realizes the importance of identifying effective ways to reduce vulnerability to disasters. Hazard mitigation plans assist communities in reducing risk from natural hazards by identifying resources, information, and strategies for risk reduction, while guiding and coordinating mitigation activities throughout the County. The Orange County Water and Wastewater Multi - Jurisdictional Hazard Mitigation Plan provides a framework for water and wastewater utilities to plan for natural and man-made hazards in Orange County. The resources and background information in the Plan are applicable countywide, providing the groundwork for goals and recommendations for other local mitigation plans and partnerships. The Plan is intended to serve many purposes, including: • Enhance Public Awareness and Understanding — to help residents of the County better understand the natural and manmade hazards that threaten public health, safety, and welfare; economic vitality; and the operational capability of important facilities; • Create a Decision Tool for Management — to provide information so that water and wastewater managers and leaders of local government, may take action to address vulnerabilities to future disasters; • Promote Compliance with State and Federal Program Requirements — to ensure that MWDOC/PWU can take full advantage of state and federal grant programs, policies, and regulations that encourage or mandate that local governments and special districts develop comprehensive hazard mitigation plans; • Enhance Local Policies for Hazard Mitigation Capability — to provide the policy basis for mitigation actions that should be promulgated by MWDOC/PWU to create a more disaster - resistant future; • Provide Inter - Jurisdictional Coordination of Mitigation- Related Programming — to ensure that proposals for mitigation initiatives are reviewed and coordinated among MWDOC/PWU within the County; and tm M:1WerodSection 1 HM.doc125,Jan- 071SDG 1 -3 SECTIONONE Introduction Achieve Regulatory Compliance -- to qualify for certain forms of federal aid for pre- and post - disaster funding, local jurisdictions must comply with the federal DMA 2000 and its implementing regulations (44 CFR Section 201.6). DMA 2000 intends for hazard mitigation plans to remain relevant and current. Therefore, it requires that state hazard mitigation plans are updated every three years and local plans, including MWDOC/PWU, every five years. This means that the Hazard Mitigation Plan for MWDOC uses a "five -year planning horizon." It is designed to carry MWDOC/PWU through the next five years, after which its assumptions, goals, and objectives will be revisited and the Plan resubmitted for approval. The Plan provides action items to reduce risk from natural hazards by fostering the development of partnerships and implementation of preventative activities. The resources and information within the Plan: Establish a basis for coordination and collaboration among MWDOC/PWU and the public in the County of Orange; • Identify and prioritize future mitigation projects; and • Assist in meeting the requirements of federal assistance programs. 1.3 PARTICIPATING WATER JURISDICTIONS BACKGROUND Orange County relies on numerous sources of water and water purveyors to meet the needs of its growing population. There are thirty-two retail water utilities in Orange County. A retail water utility can be a city water department, a water district, or a private water company. Each has a distinct service area and sources of potable water supply. Figure 1.3 -1 shows the locations of water utilities and regional facilities in Orange County. Regional water management in Orange County is provided through MWDOC and the Orange County Water District (OCWD). Together, these utilities assist in the management of imported water, Santa Ana River water and the OCWD groundwater basin for over three million residents and businesses in Orange County. MWDOC and OCWD work together to provide water to the thirty two retail utilities in the County. For hazard mitigation planning with respect to water systems, it is important to remember that each retail Utility may have different source mixes of potable water supply and thus different exposures to vulnerability from supply disruptions. It is also important to note that retail utilities with heavy reliance on the imported system can have their supplies disrupted by an outage of either the Diemer Filtration Plant in Yorba Linda or one of the several pipelines leading from the treatment plant. Outages of Metropolitan Water District of Southern California (MET) facilities bringing water to the County can also be the cause of imported service disruptions. Utilities relying on local supplies, especially when there are multiple sources such as wells within the OCWD groundwater basin, have a lower risk profile from imported system disruptions. Im M: \WerodSecGon 1 HM.doc125,1an407\SDG 1 -4 0 0 SECTIONONE Introduction As will be discussed later in the report, the most extreme risk to the regional imported water system in Orange County is from earthquakes. Based on the risk profile of having the import system knocked out from an earthquake, the County can be grouped into three regions based on the availability of local groundwater resources to the region. The three regions are: • Brea/La Habra • OCWD (Orange County Water District) Basin • South Orange County The thirty two retail water utilities are shown in Figure 1.3 -1 and are grouped by the three regions in Figure 1.3 -2 and Table 1.3 -1. Table 1.3 -2 shows the percentage of sources of potable water utilized by each retail water utility. Some of the water utilities have significantly reduced their potable water (drinking water) demands by creating a non - domestic water system that delivers non - potable water (usually recycled wastewater) for landscape irrigation and other non - drinking water uses. However, the majority of water demand in Orange County is for potable water. Local potable sources can be summarized for the three regions, as follows: UM M: \Weroc\Section t HM.doc\25- Jan -07\SDG 1 -5 i0©j`l 0 NE u' ugwiu �e ��ey °u �uu au eu�¢; �, ud wau a� uow anuuu cv�wnu o,nwy wuu un u�u. �uur .� dim rOQ!111G'11IT] MAWeroc \Section t HM.doc\25- Jan- 07 \SDG 1 -6 Figure 1.3 -2 Orange County Ret nul Agennenes n ncl Sub-Arens Srvaii_a Habra Sub , m,i San Bernardino Ci?1, my EkaEk�.iS HAY SSER'vICE MSTRCT s-- South Or, Sub -Area �.. S0VTH COAST FS., ),..Vo cwmty s ,Sub -Areas of Oranp, County Based can Wate F 8,,,ppily, Regime I)�4 MAWeroc\Section t HM.doc\25- Jan- 07 \SDG 1-/ MUNICIPAL w4raa DISTRtCT OF COSY I)�4 MAWeroc\Section t HM.doc\25- Jan- 07 \SDG 1-/ SECTIONONE N Table 1.3 -1 Sources of Potable Water for OC Retail Agencies by Sub - Region Introduction Sub- Region Retail Water I Agency OCWD Basin Wells Own Wells not in I OCWD Ground Water from Others Surface Water, Treated Met Diemer Treat- ment Plant Other Met Treat - ment Plants Brea/ Brea, City of X X X LaHabra La Habra, City of X X X X Anaheim, City of X X X X Buena Park, City of X X X East Orange CWD X X Fountain Valley X X X Fullerton X X X Garden Grove X X X Golden State East X X X " Plac./YL X X X " West OC X X X Huntington Beach X X X OCWD Irvine Ranch WD X X1 X X Basin La Palma X X X Mesa Consol. WD X X X Newport Beach X X X Orange X X X Orange Park Acres X X Santa Ana X X X Seal Beach X X X Serrano WD X X Tustin X X Westminster X X X Yorba Linda WD X X El Toro WD X Emerald Bay SD X X Laguna Beach CWD X X South Moulton Niguel WD X OC San Clemente X X San Juan Capo X X Santa Margarita WD X X South Coast WD x2 X Trabuco Canyon WD X X X Counts 1 33 22 7 2 3 32 20 A = agency can normauy receive pocaoie water uom mas source 1 =1RWD Harding Canyon production is groundwater under the influence of surface water, and must be treated 2 = SCWD brackish groundwater recovery plant is under construction UMM: \WerodSection 1 HM.doc125- Jan-07\SDG 1-8 0 SECTIONONE Introduction The Brea/La Habra region receives about 12,000 AF /yr of groundwater from the San Gabriel Basin in Los Angeles County through California Domestic Water Company and about an equal amount from MET. La Habra also has a small groundwater well. The OCWD Basin utilities pump 64 to 75 percent of their annual needs from the OCWD groundwater Basin; most of the rest of their supply is MET treated water. Anaheim produces about 12,000 acre feet/yr from its treatment plant served by a MET raw water pipeline. Serrano WD produces potable water from local runoff captured in Irvine Lake, which is then processed through its treatment plant for its own use, as well as to sell to the City of Orange. • The South Orange County area is about 95% dependent on MET for its potable water supply; local groundwater in the South Orange County area is typically, in much smaller amounts than the OCWD Basin, and is high in TDS (salt). Trabuco Canyon WD has a 6 cfs treatment plant which draws from a MET raw water pipeline for its own use and can provide limited potable water to Santa Margarita WD when needed.. Table 1.3 -2 Existing Water Supply Sources for Water Utilities in Orange County Retailed Water Utility Metropolitan Water 1 Ground Water Surface Water Recycled/Non -Pot. Water 2 City of Buena Park 34% 66% El Toro WD 95% 5% City of Garden Grove 35% 65% City of La Habra 30% 70% Laguna Beach CWD 100% 0% Mesa Consolidated WD 5% 95% 4% Moulton Niguel WD 83% 0% 17% City of Newport Beach 33% 67% <1% City of Orange 32% 66% 2% Santa Margarita WD 84% 16% Serrano WD 53% 47% South Coast WD 88% 12% Trabuco Canyon WD 75% 5% 0% 20% City of Tustin 16% 84% City of Westminster 33% 67% Yorba Linda WD 48% 52% I Metropolitan Water District of Southern California import water to Southern California from the Colorado River Basin and from Northern California. Long -Term "In -Lieu" water deliveries included. 2 Recycled municipal wastewater and /or Non - Potable surface. umM: \Weroc \Section 1 HM.doc\25- Jan- 07\SDG 1 -9 SECTIONONE Introduction 1.3.1 Potable Water System Supplies - Current and Future Orange County total water demands would have been about 735,000 AF /yr in 2005, however, water use efficiency efforts have shaved off about 58,000 AF /yr of demand. Recycling plus non - domestic supplies are at the 50,000 AF /yr level. This leaves about 627,000 AF /yr of potable water demand in 2005, growing to about 746,000 AF /yr by 2025. At present, about half of OC's potable water supplies are imported from MET. As shown in Table 1.3 -3, OC population is projected to rise from 3.1 million to 3.7 million people, and potable water demand is projected to rise at just about the same rate. Potable water supplies that were used in 2005 and are projected for 2025 are summarized by source in Table 1.3 -3. Table 1.3 -3 Orange County Potable Water Demands and Supplies, Current/Future UM M: \Weroc\Sectfon 1 HM.doc\25- Jan- 07\SDG 1-10 2005 2025 1 % Inc Notes Population millions 3.1 3.7 1 19% 2005 actual; projections per CDR, CSUF ACRE -FEET a. Water demand before WUE 735,000 936,000 27% Based on OC -MAIN , rounded b. Less WUE 58,000 115,000 27% Based on OC -MAIN , rounded a -b= Consumptive Water 677,000 821,000 21% demand c. Less Recycling.& Non- 50,000 75,000 50% Recycled & Non - Domestic Projections per domestic supply agencies' responses to MWDOC 5 -yr. Water Demand survey Spring `05. If the achieved a - b - c = Consumptive 627,000 746,000 19% Recycled & Non - Domestic supplies are less Demand for Potable Water than projected, potable water demand will increase. d. OCWD Basin pumping 350,000 450,000 29% Projection per agencies' responses to survey Spring `05, with assumed BPP of 75 %. If Santa Ana River capture is limited, future basin pumping would be less than shown. e. Less Import. Replenishment 60,000 60,000 0% OCWD's continued purchase of replenishment water in future assumes continued availability from MET; otherwise _pumping volume would decrease. d - e = OCWD Basin pumping, 290,000 390,000 34% Increase shown results from GWRS non - imported source water only production of 72,000 of /yr and increased capture of Santa Ana River water. f. Non -OCWD Basin potable 2,000 9,000 350% Increase is from San Juan (4,800 of /yr), and water wells Capistrano Beach Desalters (1,300 af/yr) and others. g. Cal Domestic supply to Brea 13,000 13,000 0% & La Habra h. Anaheim WTP 12,500 14,500 16% i. Serrano WTP 2,500 3,000 20% '. Trabuco WTP 3,000 4,000 33% k. Ocean Water Desal Plant 25,000 n/a If ocean desal production is less than shown, demand on Met would increase. a - b - c - d - e - f - g - h - j - k 304,000 287,500 -5% By subtraction. Does not include water for = Met treated full service replenishment of OCWD Basin. water Sum of Potable Supplies 627,000 746,000 19% UM M: \Weroc\Sectfon 1 HM.doc\25- Jan- 07\SDG 1-10 SECTIONONE Introduction CFS Annual averse demand rate 1 870 1 1,030 1 18% Potable water only, rounded Peak mo. demand rate 1.35 1 1,170 1 1,390 1 19% Potable water only, rounded 1. MWDOC's OC -MAIN model dated Dec 2000 is an econometric model that used demographics prepared by the Center for Demographic Research CSUF. The OC -MAIN model projected in 5 -yr intervals from 2005 through 2020. MWDOC projected 2025 numbers by straight -line extension from the model's 2015 and 2020 numbers. 1.3.2 Emergency Supplies For emergency supply analyses, it is assumed that all local water treatment plants (WTPs) would be run at full capacity. The City of Orange would use any of the Serrano WTP capacity not being used by Serrano. Reservoir storage provides a source of emergency water, but its rate of supply during a system outage event is limited based upon the type and duration of event. For a planned facility outage, it is assumed that tanks would be topped off prior to the outage, and 70% of tank volume would be "available" during the outage period. But an earthquake could strike with tank storage at various levels, and it is assumed that only 30% of tank volume would be "available ". The "available" volume would be drawn down at a steady rate over the duration of the outage (7 days for a planned outage, 10 -31 days for an earthquake). Gross storage volumes and "available" volumes for each water utility are shown in Table 1.3 -4. 1.3.3 Imported Water MWDOC is Orange County's imported water wholesaler, supplying 29 water retailers. These entities, comprised of cities and water districts, are referred to as MWDOC member utilities and provide water to approximately 2.3 million customers. MWDOC represents the interests of its member utilities and is MET's third largest member utility. The cities of Anaheim, Fullerton, and Santa Ana are direct MET member utilities and are not represented by MWDOC. Imported water from Northern California and the Colorado River meet approximately half of the County's water needs. This water is provided by MET, which serves the needs of six counties — Ventura, Los Angeles, San Bernardino, Riverside, Orange, and San Diego. MET "imports" water from the distant Colorado River and Northern California, and treats the raw water to potable quality at its water treatment plants. The MET Diemer Treatment Plant in Yorba Linda can deliver water to all of Orange County via MET feeders and joint - utility pipelines. Additionally, the western portion of Orange County can be served by MET's Jensen Treatment Plant via the Sepulveda Feeder and other feeders. The Brea/La Habra and the OCWD Basin areas obtain some flow from MST's Weymouth Treatment Plant via- the relatively small Orange County Feeder. The South Orange County area receives almost all its imported water from MET's Diemer Plant, via the Allen- McColloch Pipeline (AMP) and its extension, the South County Pipeline (SCP), and via the East Orange County Feeder No. 2 (EOCF #2) and its main extensions the Joint Regional Transmission Main (JTM) and Aufdenkamp Transmission Main (ATM). The MET OC -88 South County Pump Station (OC -88 SCPS) is a key facility, boosting water about 300 feet hydraulically from the AMP into the SCP to allow service throughout south Orange County. About 10 cfs of flow from MET can reach Laguna Beach via the south end of the Orange County Feeder and the Coast Supply Line. There are three large lined- and - covered Im M:\Weroc \Section 1 HM.doc\25-tan- 07\SDG 1-11 0 SECTIONONE 0 Introduction reservoirs in the County of Orange: the El Toro Water District's R -6 Reservoir, the City of Newport Beach's Big Canyon Reservoir, and the MET's Orange County Reservoir in Brea. Regarding imported water supplies, there are many assumptions that are noted in Table 1.3 -3 The largest unknown is the success rate of planned local projects. If the water supply projects do not get built or produce less than planned or are merely delayed, then more MET water will be needed than shown. With the planned local projects plus the continued availability of MET Replenishment water for the OCWD Basin, Table 1.3 -3 shows a 5% decrease in Full- Service MET water demand out to 2025. For hazard mitigation purposes relative to water supply in Orange County, the continued heavy reliance on imported water points out the need to ensure the high reliability of the import system both inside of Orange County and those portions of the MET system bringing the water to Orange County. 1.3.4 Groundwater Among all local supplies available to retail agencies, groundwater sources supply the most water. The water supply resources in Orange County result from the existence of the following three groundwater basins. • OCWD Groundwater Basin • La Habra Groundwater Basin • San Juan Capistrano Groundwater Basin (San Juan Basin Authority) 1.3.4.1 OCWD Groundwater Basin The Orange County Basin is by far the largest groundwater basin in Orange County. The underlying formations are dominated by a deep structural depression containing a thick accumulation of fresh water - bearing interbedded marine and continental sand, silt and clay deposits. The proportion of fine material generally increases toward the coast, dividing the Basin into forebay and pressure areas. Figure 1.3.4.1 -1 shows an overview of the basin areas. The sediments containing easily recoverable fresh water extend to about 2,000 feet below the ground surface near the center of the Basin. Well yields range from 500 to 4,500 gallons per minute (gpm), but are generally 2,000 to 3,000 gpm. Historically, OCWD managed the Basin based upon seeking to increase supply rather than restricting demand. Nonetheless, a Basin Production Percentage (i.e., pumping limitation) is established each year by OCWD to ensure the long term beneficial use of the Basin. Because the Basin is not operated on an annual safe -yield basis, the net change in storage in any given year may be positive or negative; however, over the long term, the Basin must be maintained in an approximate balance to ensure the long -term viability of Basin supplies. Currently, groundwater is produced from approximately 500 active wells within the Basin, approximately 300 of which produce less than 25 AF /yr. Groundwater production from approximately 200 large - capacity or large- system wells operated by the 21 largest water retail utilities accounted for an estimated 97 percent of the total production. UM M: \WerodSection 1 HM.doc\25,Jan-07\SDG 1 -12 0 5 --�R R9 Cpl ON -F Introducao on Total potable water pumping capacity of OCWD Basin utilities is about 700 cfs, and an additional 48 cfs is planned "certain ". For Year 2025, it is assumed that for OCWD Basin utilities, three fourths of the increase in potable demand (from 2010 to 2025) will be met from increases in well capacity. There is no increase projected for non -OCWD Basin utilities. The projected 2010 and 2025 summer pumping capacities are shown on the right side of Table 1.3 -5. tM MAWeroc \Section 1 HM.doc\25- Jan- 07 \SDG 1 -13 SECTIONONE Figure 1.3.4.1 -1 Orange County Water District Basin Areas �y 44%. �1 >. Irvine, le Central? Basin 7 �m,. .,�zar�.��s�.sax,�or:.- rrirm!ra aix=�ea ...».�:u�r x�ar.� ax »;�r.�:.•�,, Main y Maim f di Basin j Basin �y 44%. �1 >. Irvine, le IntroduVem Working closely with OCWD, MWDOC has developed a water balance model that incorporates OCWD's operating policies .in managing the Basin. It is used to project the groundwater production for each producer in the Basin based on a range of assumptions provided by OCWD. Most of the assumptions involve the future condition of replenishment supplies to the Basin, which will be discussed in detail in the next subsection. The variables used to project the groundwater production are: ms M: \Weroc\Sedion 1 HM.doc\25- Jan -07\SDG 1 -14 �" �,�.. E< .e� ai; �m,. .,�zar�.��s�.sax,�or:.- rrirm!ra aix=�ea ...».�:u�r x�ar.� ax »;�r.�:.•�,, IntroduVem Working closely with OCWD, MWDOC has developed a water balance model that incorporates OCWD's operating policies .in managing the Basin. It is used to project the groundwater production for each producer in the Basin based on a range of assumptions provided by OCWD. Most of the assumptions involve the future condition of replenishment supplies to the Basin, which will be discussed in detail in the next subsection. The variables used to project the groundwater production are: ms M: \Weroc\Sedion 1 HM.doc\25- Jan -07\SDG 1 -14 SECTIONONE • Amount of Santa Ana River base flow; • Amount of Santa Ana River storm flow; • Amount of Basin incidental recharge; • Relationship of basin storage and subsurface outflow; • Basin percolation capacity; • Basin well production capacity; • Refill/maintain basin level approach; • Replenishment purchases from imported sources; and • Future annexation activities 1.3.4.2 OCWD Seawater Intrusion Barrier Introduction OCWD operates several seawater intrusion barriers to prevent the intrusion of seawater into the groundwater basin. OCWD operates the Talbert Seawater Intrusion Barrier in Fountain Valley and Huntington Beach, and co -funds operation of the Alamitos Seawater Intrusion Barrier in Seal Beach. Currently OCWD is developing the Groundwater Replenishment (GWR) System, which will expand the amount of purified wastewater that can be used for seawater intrusion barriers, and for groundwater recharge into the basin. 1.3.4.3 OCWD Recharge Operations OCWD has developed an extensive system of facilities to divert and store Santa Ana River (SAR) water to recharge water into the basin. OCWD currently encompasses over 229,000 acres of the lower watershed of the SAR below Prado Dam in Orange County. OCWD owns and operates several diversion structures and roughly 1,124 acres of spreading facilities that facilitate the recharge process. Additionally, OCWD implements an extensive water quality monitoring program to assess groundwater quality through the groundwater basin. The OCWD Groundwater Basin is recharged by multiple sources. These include artificial, i.e., man-made systems, and incidental or natural recharge. One of OCWD's core activities is refilling or replenishing the Basin to balance the removal of groundwater by pumping. Sources of recharge water include SAR baseflow and storm flow, Santiago Creek Flows, imported supplies purchased from MET, supplemental supplies from the upper SAR Watershed, and purified wastewater from recycled plants. 1.3.4.4 OCWD Prado Dam Activities and Prado Dam Conservation Pool Prado Dam is located in Riverside County on the main stem of the SAR upstream of the Orange County Groundwater Basin. The dam was constructed in 1941 to protect against flooding, such as occurred in 1938. The Army Corps of Engineers (ACOE) operates the dam, and has long cooperated with OCWD to facilitate groundwater recharge efforts below the dam, as long as the primary flood - control benefits of the tMM: \Weroc\Section 1 HM.doc\25- Jan -0TSDG 1 -15 SECTIONONE Introduction project are not compromised. Operation of Prado Dam has been adjusted over the years to recognize the secondary goal of conserving water for groundwater recharge. In 1994, the ACOE adopted the Prado Dam and Reservoir Water Control Manual, which instituted the creation of a conservation pool behind Prado Dam to augment OCWD's groundwater recharge operations. Under the tightly controlled conditions of a 2006 Memorandum of Agreement (MOA) between the ACOE, the US Fish and Wildlife Service (USFWS), and OCWD, the ACOE conserves stormwater on ACOE and OCWD lands behind the dam on behalf of OCWD. Conserved water is subsequently released for percolation downstream at a rate of approximately 500 cubic feet per second (cfs). 1.3.5 La Habra Groundwater Basin Currently, the La Habra Basin is non - adjudicated and serves the City of La Habra. The long -term extraction supply has been estimated at 4,500 AF /yr; however, historically the City's extraction rate is approximately 1,074 AF /yr (averaged over the past 15 years), which is considerably less than the potential yield. Thus, the La Habra Basin has not been identified to be in overdraft. There is some interest by the local agencies to increase production out of the basin. Water quality issues with high TDS and iron and manganese have created problems and likely require treatment for potable service. 1.3.6 San Juan Capistrano Groundwater Basin This groundwater basin underlies the San Juan Valley and several tributary valleys in southern Orange County and is managed by the San Juan Basin Authority. The basin is bounded on the west by the Pacific Ocean and otherwise by tertiary semi - permeable marine deposits. San Juan Creek drains the San Juan Valley, and several other creeks drain valley tributaries to the San Juan. Average annual precipitation ranges from 11 to 15 inches. Thickness of the alluvium average about 65 feet and may reach more than 125 feet. Wells typically yield from 450 to 1,000 gpm. A study by NBS Lowry (1994) investigated and modeled the groundwater basin for 1979 through 1990. They determined a mean pumpage of 5,621 AF /yr and a mean subsurface inflow of 2,246 AF /yr. Average subsurface outflow to the ocean is estimated to be about 800 AF /yr. Recharge of the basin is from flow in San Juan Creek, Oso Creek, and Arroyo Trabuco and precipitation to the valley floor. Water from springs flows directly from Hot Spring Canyon into San Juan Creek, adding to recharge. Groundwater mineral content is variable in this basin with TDS increasing from below 500 mg/L in the upper reaches of the valley to near 2,000 mg/L near the coast. TDS content of water from three public supply wells averages 760 mg/L and ranges from 430 mg/L to 1,250 mg/L. Historical production from the basin has ranged from 2,000 to 5,000 AF over the years. In 2000, the California State Water Resources Control Board granted a water rights permit of 9,227 AF /yr to San Juan Bashi Authority for diversion and use from the San Juan Basin. Member agencies of the San Juan Basin Authority are: City of San Juan Capistrano, Moulton Niguel Water District, Santa Margarita Water District, and South Coast Water District. San Juan Basin Authority completed Phase I of the San Juan Basin Desalter Project in December 2004 at a capacity of 4,900 acre -feet per year. Depending on the condition of the basin after the implementation of the San Juan Basin Groundwater Management and Facility Plan, future expansion of the production may be possible. Another desatter project is currently msM:1WeroclSecUon 1 HM.doc\25,lan- 071$DG 1 -16 0 SECTIONONE Introduction under construction by South Coast Water District. When complete, the project is expected to extract up to 2,000 AF /yr. 1.4 PARTICIPATING WASTEWATER JURISDICTIONS For wastewater collection and treatment in Orange County, there are two regional agencies that are responsible for the trunk line collection, treatment, biosolids management, and ocean outfalls for treated wastewater disposal. These agencies are the Orange County Sanitation District (OCSD), which covers north and central Orange County, and the South Orange County Wastewater Authority (SOCWA), which covers south Orange County. Following are descriptions of these agencies. 1.4.1 Orange County Sanitation District Facilities and History Orange County Sanitation District (OCSD) began operations in 1954, replacing the Orange County Joint Outfall Sewer. Formed under the County Sanitation District Act of 1923, OCDS was comprised of nine revenue areas until 1998, when it consolidated into a single district. Today, OCSD is the third largest wastewater discharger in the western United States, providing sewer service for 23 cities and the unincorporated areas of north and central Orange County. Its capital facilities include 12 regional trunk lines, two treatment plants, two discharge outfalls and two emergency weir outlets. OCSD operates and maintains approximately 400 miles of sewer lines. OCSD's formation was not only to address the need for sewage collection, treatment and disposal facilities for a growing Orange County. Its formation also facilitated public financing for sewer systems in Orange County, which the previous organization was unable to accomplish. A bond election in 1949 allowed OCSD to buy treatment and disposal facilities serving the cities of Anaheim, Santa Ana, Fullerton, and Orange, as well as the sanitary districts in Placentia, Buena Park, La Habra and Garden Grove. The bond election also financed the beginning of a network of trunk sewer systems throughout Orange County. OCSD formally took control of sewer management in 1954 when Plant No. 2 and Ocean Outfall No. 1 were constructed. Ocean Outfall No. 2 was subsequently constructed in. the 1970's. 1.4.1.1 OCSD Capital Facilities OCSD manages its facilities through the preparation and implementation of wastewater master plans. These plans outline the improvements to collection, treatment and disposal facilities required to manage flows over a selected planning horizon. In October 1999, the District adopted a new strategic plan. The planning effort defined the District's goals, responsibilities, and requirements over the next twenty years, including projections through the assumed ".build -out" of the District's service area to the year 2050. Critical factors such as population growth, new construction, and the volume of wastewater delivered to the treatment plants and viable water conservation and reclamation programs have been evaluated. In June 2002, the District completed the Interim Strategic Plan Update (ISPU), which further updated these critical factors and developed revised cost estimates and user fee projections for upgrading the tMM: \Weroc \Section 1 HM.doc\25- Jan -07\SDG 1 -17 SECTIONONE Introduction District's level of treatment to secondary standards. On July 17, 2002, after reviewing the Interim Strategic Plan, updated treatment alternatives, ocean monitoring data, public input, regulatory issues, and financial considerations, the Board of Directors made the decision to upgrade treatment to meet secondary treatment standards. Figure 1.4.1.1 -1 shows the OCSD service area. OCSD serves more than 87 percent of the population in Orange County, representing over 2.3 million people. It has been estimated that OCSD will be serving a population of over 2.8 million people in 2020. OCSD provides sewer service for over 210,000 acres within Orange County (approximately 35 percent of the county's land area). Land use in the OCSD service area consists of a mixture of residential, commercial, industrial, institutional and open space categories. The south and west portions of the OCSD area are largely developed, while the north and east portions are less developed. 1.4.1.2 Overview of Existing OCSD System The OCSD sewer system collects wastewater through an extensive system of regional pipelines, pump stations and force mains, with diversions installed between trunk sewer systems. Wastewater is treated at two treatment facilities, and an outfall system is available for ocean disposal of treated wastewater. The treatment plant's currently operate under a permit from the Regional Water Quality Control Board as established in National Pollutant Discharge Elimination Systems (NPDES) Permit No. CA0110604 that permits the discharge of treated wastewater through an ocean outfall system to the Pacific Ocean. Un M: \WerodSection 1 HM.doc125,1an- 0755DG 1 -18 0 SECTIONONE Introduction Figure 1.4.1.1 -1 Orange County Sanitation District Service Area E3ftEA'`, cye P!.AC; NTiA `w "CA 1A111 8t1EN �a ANAHEIM £o Pf:F�x f � G V'rLCA PARK {v aJ1i1iF.' 9 =� s. r r Plant No,gI y Plant No, 2 } 1.4.1.3 OCSD Trunk Sewer Systems OCSD owns, operates, and maintains twelve trunk sewer systems that are located throughout the service area. The trunk systems include approximately 400 miles of sewer pipes and force mains, ranging in size from 12 to 120 inches in diameter (interplant), as well as twenty pump stations. The trunk sewer system also includes nine interconnections (to convey flow between main trunk systems) and 87 diversion UM _- -- M: \Weroc \Section 1 HM.doc125,Jan-o'A T50G 1 -19 i 1.4.1.3 OCSD Trunk Sewer Systems OCSD owns, operates, and maintains twelve trunk sewer systems that are located throughout the service area. The trunk systems include approximately 400 miles of sewer pipes and force mains, ranging in size from 12 to 120 inches in diameter (interplant), as well as twenty pump stations. The trunk sewer system also includes nine interconnections (to convey flow between main trunk systems) and 87 diversion UM _- -- M: \Weroc \Section 1 HM.doc125,Jan-o'A T50G 1 -19 SECTIONONE Introduction structures (to convey flow between sewer pipes within a main trunk system). The trunk sewer systems are currently conveying approximately 240 million gallons per day (mgd); or with a flow split of approximately 150 mgd to Plant No. 1 and approximately 90 mgd to Plant No. 2. This split reflects that a portion of the raw wastewater tributary to Plant No. 1 is diverted to Plant No. 2 via a 120 -inch interplant pipeline. 1.4.1.4 OCSD Treatment Plant System OCSD has two wastewater treatment plans. Plant No. 1 is located in the City of Fountain Valley, approximately four miles inland of the Pacific Ocean and adjacent to the Santa Ana River. Influent wastewater entering Plant No. 1 passes through the metering structure, mechanical bar screens, grit chambers and the primary clarifiers, before undergoing the activated sludge process. The activated sludge process consists of aeration basins and secondary clarifiers. Activated sludge effluent can be diverted to OCWD for tertiary treatment before reuse. The remainder of the activated sludge effluent flows through the interplant line to Plant No. 2 where it's either used as plant water or it goes to the outfall booster pump and directly to the ocean outfall for final disposal. Plant No. 2 is located in the City of Huntington Beach, adjacent to the Santa Ana River and east of the Pacific Coast Highway. Untreated wastewater entering Plant No. 2 passes through magnetic flow meters, mechanical bar screens and grit removal chambers. Flow then passes through the primary clarifiers before undergoing secondary treatment via an oxygen - activated sludge process. Some of OCSD's primary - treated effluent does not undergo secondary treatment. However, both primary- and secondary - treated effluent from Plant Nos. 1 and 2 are blended together before being release into the ocean outfall system. Interconnections exist between Plant Nos. 1 and 2. These interconnections include a digester gas pipeline, communications cables, Plant No. 1 effluent lines to the Ocean Outf'all Booster Station and a raw wastewater interplant pipeline. Solids treatment at both Plant No. 1 and 2 includes dissolved air floatation thickening of waste activated sludge, anaerobic sludge digestion and belt press dewatering. Both plants also have facilities for odor control, chemical addition and digester gas utilization for electrical generation. 1.4.1.5 OCSD Ocean Outfall System The ocean outfall system includes three discharge structures. The primary ocean outfall ( Outfall No. 2) was put in service in 1971 and is approximately 27,400 feet long including a 6,000 -foot diffuser section. The primary outfall is 120 inches in diameter and discharges treated wastewater into the Pacific Ocean, at a depth of approximately 200 feet some four and a half miles offshore. The primary outfall has a capacity of approximately 480 mgd. The emergency outfall ( Outfall No.l ), originally constructed in 1954 and modified in 1965, is approximately 7,000 feet long, including a 1,000 -foot diffuser section. The emergency outfall is 78 inches in diameter and is located at a depth of approximately 65 feet, a mile and a half offshore. The emergency outfall has a capacity of approximately 245 mgd. OCSD's NPDES permit specifies that this outfall can be used for emergencies only. The Santa Ana River emergency overflow weirs discharge directly to the Santa Ana River, and are also limited for emergency use only. UMM: \WeroclSeciion 1 HM.doc125- JanATSDG 1-20 SECTIONONE 1.4.1.6 OCSD Levels of Service Introduction The levels of service provided by OCSD will increase significantly in the future, requiring nearly $3 billion in new capital assets and millions in increased maintenance and operations costs over the next seven years. One area where OCSD's levels of service will increase significantly is the quality of effluent that is provided to OCWD for reclamation or discharged into the ocean. OCSD is also considering further reduction in the offsite odors from its treatment plants, and reducing its emissions of air toxics. OCSD's levels of service will also improve in the area of biosolids management. 1.4.1.7 Communities Included within OCSD's Service Area Anaheim Brea Buena Park Cypress Fountain Valley Fullerton Garden Grove Huntington Beach Irvine La Habra La Palma Los Alamitos Newport Beach Orange Placentia Santa Ana Seal Beach Stanton Tustin Villa Park Yorba Linda Costa Mesa Sanitary District Midway City Sanitary District Irvine Ranch Water District Unincorporated areas near Anaheim Hills umM: \Weroc\Section 1 HM.doc125- Jan -07\SDG 1 -21 SECTIONONE 1.4.2 South Orange County Wastewater Authority ( SOCWA) Introduction The mission of the South Orange County Wastewater Authority ( SOCWA) is to collect, treat, beneficially reuse, and dispose of wastewater and biosolids in an effective and economical manner that respects the environment, maintains the public's health and meets or exceeds all local, state and federal regulations to the mutual benefit of SOCWA's ten member agencies and the general public in South Orange County. SOCWA provides, at a minimum, full secondary treatment at all of its regional wastewater facilities, and also has active water recycling, industrial waste (pretreatment), biosolids management and ocean/shoreline monitoring programs to meet the needs of its members and the requirements of the applicable National Pollutant Discharge Elimination System (NPDES) permits. In order to strike this balance, SOCWA manages a series of ongoing environmental programs, each designed to play an important role in fulfilling the Agency's mission. Programs related to Hazard Mitigation Planning include acquiring, constructing, maintaining, repairing, managing, operating and controlling facilities for the collection, transmission, treatment and disposal of wastewater and biosolids, the reclamation and reuse of wastewater for beneficial purposes, and the production, transmission, storage and distribution of non - domestic water. SOCWA was created on July 1, 2001 as a Joint Powers Authority with no taxing authority (Joint Powers Authority Signatories listed below). SOCWA is the legal successor to the Aliso Water Management Agency (AWMA) (1972), South East Regional Reclamation Authority (SERRA) (1970) and South Orange County Reclamation Authority ( SOCRA) (1991). Figure 1.4.2 -1 shows the service area and the major facilities. 1.4.2.1 SOCWA Joint Powers Member Agencies City of Laguna Beach (CLB) City of San Clemente (CSC) City of San Juan Capistrano (CSJC) El Toro Water District (ETWD) Emerald Bay Service District (EBSD) Irvine Ranch Water District (IRWD) Moulton Niguel Water District (MNWD) Santa Margarita Water District (SMWD) South Coast Water District (SCWD) Trabuco Canyon Water District (TCWD) tm MAWerocZection 1 HM.doc\25- Jan- 071SDG 1 -21 5 -�' �� I d D -j'] ON E IntroducME Figure 1.4.2 -1 SCV7,YY,A Regional Wastewater System �t { *i CWA MM: \Weroc \Section 1 HM.doc\25- J2n- 07 \SDG 1 -22 SECTIONONE 1.4.2.2 Communities Included within SOCWA Aliso Viejo Coto de Caza Dana Point Emerald Bay Ladera Laguna Beach Laguna Hills Laguna Niguel Laguna Woods Lake Forest I,as Flores Mission Viejo Rancho Santa Margarita San Clemente San Juan Capistrano Talega Trabuco Canyon 1.4.2.4 SOCWA Treatment Plants Operated Regional Treatment Plant (RTP) 12.0 mgd Jay B. Latham (JBL) 13.0 mgd Coastal Treatment Plant (CTP) 6.7 mgd 3A Plant (3A) 6.0 mgd C) Introduction SOCWA also operates the Effluent Transmission Main (ETM) and the Aliso Creek and San Juan Creek Ocean Outfalls. The City of Laguna Beach operates the North Coast Interceptor (NCI) on a contract basis on behalf of SOCWA. MNWD operates the Alicia Parkway Pump Station on behalf of SOCWA, and the City of San Clemente operates the San Clemente Land Outfall. 1.4.2.5 SOCWA Ocean Outfall System The ocean outfall system includes two discharge structures. The Aliso Creek Outfall was put in service in 1978 and is approximately 7,900 feet offshore in a SW direction from the mouth of Aliso Creek. This outfall has a capacity of approximately 50 mgd, but currently discharges approximately 21 mgd. The outfall suffered damage in 1992 from coastal storms and was repaired in 1993. The second outfall is the San Juan Creek Outfall built in 1978. It is 10,550 feet offshore in a SW direction from Doheny Beach at San Juan Creek. This outfall has a design capacity of 24 mgd gravity flow and an additional 80 mgd pumped flow. Its current Flow rate is 19.1 mgd. M:lWerocl5ection 1 HM.doc\25- Jan -0TSDG 1 -23 SECTIONONE Introduction Table 1.3 -3 Orange County Potable Water Demands and Supplies, Current/Future 1. MWDOC's OC -MAIN model dated Dec 2000 is an econometric model that used demographics prepared by the Center for Demographic Research CSUF. The OC -MAIN model projected in 5 -yr intervals from 2005 through 2020. MWDOC projected 2025 numbers by straight -line extension from the model's 2015 and 2020 numbers. UMM:1WeroctSeclion 1 HM.doci25- Jan -07\SDG 1 -24 2005 2025 % Inc Notes Population millions 3.1 3.7 19% 2005 actual; projections per CDR, CSUF ACRE -FEET a. Water demand before WUE 735,000 936,000 27% Based on OC -MAIN , rounded b. Less WUE 58,000 115,000 27% Based on OC -MAIN , rounded a - b = Consumptive Water 677,000 821,000 21% demand c. Less Recycling.& Non- 50,000 75,000 50% Recycled & Non - Domestic Projections per domestic supply agencies' responses to MWDOC 5 -yr. Water Demand survey Spring `05. If the achieved a - b - c = Consumptive 627,000 746,000 19% Recycled & Non - Domestic supplies are less Demand for Potable Water than projected, potable water demand will increase. d. OCWD Basin pumping 350,000 450,000 29% Projection per agencies' responses to survey Spring `05, with assumed BPP of 75 %. If Santa Ana River capture is limited, future basin pumping would be less than shown. e. Less Import. Replenishment 60,000 60,000 0% OCWD's continued purchase of replenishment water in future assumes continued availability from MET; otherwise pumping volume would decrease. d - e = OCWD Basin pumping, 290,000 390,000 34% Increase shown results from GWRS non - imported source water only production of 72,000 af/yr and increased capture of Santa Ana River water. f. Non -OCWD Basin potable 2,000 9,000 350% Increase is from San Juan (4,800 af/yr), and water wells Capistrano Beach Desalters (1,300 af/yr) and others. g. Cal Domestic supply to Brea 13,000 13,000 0% & La Habra h. Anaheim WTP 12,500 14,500 16% L Serrano WTP 2,500 3,000 20% '. Trabuco WTP 3,000 4,000 33% k. Ocean Water Desal Plant 25,000 n/a If ocean desal production is less than shown, demand on Met would increase. a - b - c - d - e - f- g - h -j - k 304,000 287,500. -5% By subtraction. Does not include water for = Met treated full service replenishment of OCWD Basin. water Sum of Potable Supplies 1 627,000 746,000 19% CFS Annual averse demand rate 870 1,030 18% Potable water only, rounded Peak mo. demand rate 1.35 1,170 1,390 19% Potable water only, rounded 1. MWDOC's OC -MAIN model dated Dec 2000 is an econometric model that used demographics prepared by the Center for Demographic Research CSUF. The OC -MAIN model projected in 5 -yr intervals from 2005 through 2020. MWDOC projected 2025 numbers by straight -line extension from the model's 2015 and 2020 numbers. UMM:1WeroctSeclion 1 HM.doci25- Jan -07\SDG 1 -24 a U SECTIONONE Introduction Table 1.3 -4 Existing Potable Water Storage Volume and Portion Available for Emergency Sub- Region Retail Water Agency .�'. U d O 9 :: O W f.r E- d .4 i; A i.. rn 4 ^ ° C7 h A MG Brea/ rea 19.6 19.6 0..97 19 67 30% 20 39 Lallabra Habra Ra 9.8 9.8 .97 9 17 30% 5 15 Subtotal Brea/La Habra 29.3 29.3 28 84 25 54 Anaheim 29 33% 9 9 Buena Park 20 30% 6 6 East Orange CWD 1.8 30% .5 .5 Fountain Valley 10 30% 3 3 Fullerton 19.6 19.6 .97 19 85 30% 26 44 Garden Grove 53 30% 16 16 Golden State -East OC 4 300/. 1 1 Golden State Plac./YL 3 30% 1 1 Golden State West CC 5 30% 1 1 Huntington Beach 55 30% 43 43 Irvine Ranch WD 143 30% 43 43 OCWD La Palma 4.5 30% 8 8 Basin Mesa Consol. WD 28 30% 8 8 Newport Beach 194 70% 136 136 Orange 43 30% 13 13 O Park Acres 1 30% 0 0 Santa Ana 49 30% 15 15 Seal Beach 7 30% 2 2 Serrano WD 9 30% 3 3 Tustin 2 12 30% 4 4 Westminster 16 30% 12 12 Yorba Linda WD 41 30% 12 12 Subtotal Basin 20 20 19 322 341 El Toro WD 124.5 124.5 .97 121 12 30% 4 1 124 Laguna Bch CWD 1 34 50% 17 17 Moulton Niguel 13.0 2.4 15.4 .93 14 72 65% 47 61 South San Clemente 29 7 35.9 .7 25 22 30% 7 32 OC San Juan Capo .51 .5 .7 9 12 30% 4 4.0 Santa Margarita WD 137.5 137.5 .97 133 84 30% 25 159 South Coast WD 13 12.6 .70 9 22 30% 7 15 SDCWA San.Onofre 3.7 5 8.7 .70 6 30% 6 Trabuco CanyonWD 10 30% 3 3 Subtotal South County 275 48 12 335 309 1 1 112 421 Year 2005 storage volumes reported to MWDOC. Share of volume of EOCWD Wholesale system reservoirs (about 18 mg) is not known. UMM: \Weroc\Section 1 HM.doc\25- Jan -07\SDG 1 -25 SECTIONONE Table 1.3 -5 Potable Well Water Production Capacity to Year 2025 by Producer Introduction Sub- Region Retail Water Agency Historic Peak Month Pum in Exist. Summer Pumping Ca acit t'1 Certain Projects Additional Capacity 2010 Summer Pumping Capacity Increase With (3) Demand 2025 Summer Pumping Ca tacit AF cfs Brea/ Brea LaHabra La Habra 130 2.2 2.2 2.2 Subtotal 2.2 2.2 2.2 Anaheim 6,481 107.4 5.0 112.4 14.4 126.9 Buena Park 1,415 23.5 5.0 28.5 10.4. 38.8 East Orange CWD 164 2.7 2.7 0.0 2.8 Fountain Valley 1,255 20.8 20.8 3.6 24.4 Fullerton 2,530 41.9 41.9 3.0 44.9 Garden Grove 3,766 62.4 5.0 67.4 0.8 68.2 Golden State -East 209 3.5 3.5 0.3 3.7 Gold. State- Plac./YL 497 8.2 8.2 0.6 8.9 Gold. State -West OC 1,451 24.1 5.0 29.1 2.4 31.5 Huntington Beach 2,445 40.5 40.5 0.1 40.6 Irvme Ranch WD 5,213 90.8 7.7 98.5 32.3 130.8 OCWD La Palma 284 4.7 4.7 6.7 11.4 Basin Mesa Consol. WD 1,857 30.8 30.8 1 0.3 31.1 Newport Beach 1,455 24.1 24.1 2.3 26.4 Orange 3,203 53.1 53.1 0.6 53.7 Orange Park Acres 106 1.8 1.8 2.4 4.2 Santa Ana 5,117 84.8 10.0 94.8 0.0 94.9 Seal Beach 440 7.3 7.3 0.0 7.3 Serrano WD 339 5.6 5.6 0.1 5.7 Tustin 1,147 19.0 19.0 1.5 20.5 Westminster 1,396 23.1 5.0 28.1 3.3 31.4 Yorba Linda WD 1,398 23.2 5.0 28.2 1.2 29.4 Subtotal Basin 703.4 47.7 751.1 86.3 837.4 El Toro WD Emerald Bay SD -Laguna Bch CWD South Moulton Niguel OC San Clemente 142 0.8 0.8 San Juan Ca o 234 3.9 8.0 8.0 8.0 Santa Margarita WD 41 0.7 0.7 0.7 South Coast WD 1.8 1.8 1.8 Trabuco Canyon WD 174 2.0 2.0 Subtotal South Cplu)ty 7.4 9.8 13.3 0 10.5 TOTAl- Orange County 712.9 1 57.4 7 766.5 86.3 850.0 1. Source: MWDOC's records of maximum monthly pumping, however, the numbers have been adjusted down if pumping capacity has decreased since the pumping was recorded. IRWD's number is DRWF "Clear" 80 cfs (conservative) plus DATS 10 cfs plus Harding Canyon 0.8 cfs. 2. Additional "certain" groundwater projects are 8 conjunctive use wells (Q 50 cfs), the IRWD Desalter (7.7 cfs) and the San Juan Desalter (8.0 cfs). 3. Basin agencies assumed to increase well capacity to match 75% of increase in potable water demand. UM: \Weroc\Section 1 HM.doc\25- Jan -07\SDG 1 -26 SECTIONONE Introduction Figure 1.3-1 Orange County Retail Agencies and Regional Water Facilities wft. caw Pd .n wnx C-Aw P., 2MI.00"FCEDER r S.—R-4— C.-ly DINO FILTRAtidlir-W 11 0 1-- =Tm Riverside C—ly k.LakalplrNa A MET Untreated Water Pipeline MET Treated Water Pipeline Joint MET/Local Agency Pipeline Join, Local Agency Pipeline ■ Major Water Facility N Reservoirs w + E s San Oiego r—fy Orange County Water Retailers MUNICIPAL and WAMR Transmission Mains DISTRICT OOF RANGE COUNTY un Downenm11 O-Oct-06%S DG 1-5 �PIM' [i R AO ZIM71- JURISDICTIONAL PARYI91PAi1DIN sE C u UON 2 -FDnRTICiP 710M 2.1 U ELIT]ES Descriptions of each participating Water and Wastewater Utility (PWU) are provided below. This section is organized first by utilities that have management responsibilities that extend to several water districts or city utilities including: Municipal Water District of Orange County, Orange County Water District, Orange County Sanitation District, and South Orange County Wastewater Authority. Participating water and wastewater utilities are theca presented in alphabetical order, including: City of Buena Park, El Toro Water District, City of Garden Grove, City of La Habra, Laguna Beach County Water District, Mesa Consolidated Water District, Moulton Niguel Water District, City of Newport Beach, City of Orange, Santa Margarita Water District, Serrano Water District, South Coast Water District, Trabuco Canyon Water District, City of Tustin, City of Westminster and Yorba Linda Water District. 2,1.1 MunMpas Water MoMc,� oT Or< np� C©UMY �SQndc� popuk°ll= /U Million) MWDOC °s Mission Statement is to provide reliable, high - quality water supplies from MET and other sources to meet present and future needs, at an equitable and economical cost for all Orange County, and to promote water use efficiency. MWDOC is a regional water wholesaler and resource planning utility, managing all of Orange County's imported water supply with the exception of water imported to the cities of Anaheim, Fullerton, and Santa Ana. MWDOC serves more than 2.3 million residents in a 600- square -mile service area (see Figure 2 -2). Its commitment is to ensure water reliability for the communities it serves. To that end, MWDOC focuses on sound planning and appropriate investments in water supply, regional delivery infrastructure and emergency preparedness. As a regional wholesaler, MWDOC °s most significant roles are broadly applicable to all of its member utilities. A key goal of MWDOC is to provide services and programs that are broad - reaching that the retail utilities cannot reasonably provide as single entities. MWDOC is governed by an elected seven - member Board of Directors, each board member representing a specific area of the County. Each director is elected to a four -year terra by voters who reside vvithin one of the seven divisions within the MWDOC service area. 2 -1 SW6NT7yV,O --jOKE-JURISDICTIONAL PARTICIPATIOIN F�guire 2-2- MW,,, DOE's Serykv Amn nud Mmi beir Agencies g"m 4 say sov'" MOM Nbult- Ntg�'d tag" 14 llt�O Cw,l tywol"Moit! %Vat- DKt,.Il 7— I--,--.. 17VI/3C.'C W t-bt-.r Aq, • i 0 •,• 11, -( -, jk4h r—I I — Pit:: dri}+tx`TS�tiYrgp W4DOC Service Area & Co and Member Agencies WC-11) 2-2 �T I l � TIITAA9 O [Ed 511I iTEll MMMII 11�G IM111 0P 2.1_, Oxonge County 41h,:iIzr ©oSMd �Sznl�cg 1P0C PW @UVm 23 rrloiiion The Orange County Water District (OCWD) manages the large groundwater basin that provides reliable, high- quality groundwater to 20 cities and water utilities and their 2.3 million customers. OCWD was formed in 1933 by a special act of the California -Legislature [Water Code App §40 -1 et seq.], which authorized OCWD to represent water users and landowners in litigation (with upstream users) and empowered OCWD to protect the water supply and protect the groundwater basin. The mission of OCWD is to provide local water retailers with a reliable, adequate, high - quality water supply at the lowest reasonable cost in an environmentally responsible manner. With years of proper planning and investment, OCWD has more than doubled the output of the groundwater basin. The groundwater basin, which underlies north and central Orange County, provides between 2 /3rds and 3 /4ths of the water needed in that area; imported water meets the balance of the water demand. Groundwater is pumped by water utilities before being delivered to customers. Groundwater is a great value at approximately one -half the cost of imported water. OCWD purchases through MWDOC some imported water supplies for recharge operations and for operating and maintaining the seawater intrusion barrier. Today, OCWD is managed by a ten - member Board of Directors, with three appointed from the cities of Anaheim, Fullerton and Santa Ana, and the remainder of the Board publicly elected -from geographic divisions within the OCWD service area. OCWD is known internationally for its "tradition of innovation." OCWD built the first advanced wastewater purification plant to provide water to prevent seawater intrusion into Orange County's groundwater basin. Today, OCWD and OCSD are partners in the world's largest advanced wastewater purification project, called the Groundwater Replenishment System that will provide water to 144,000 families each year beginning in 2007. 2.1.3 Orange County Sanitation District (Service Population, 22 TnNlon) The Orange County Sanitation District (OCSD) is responsible for safely collecting, treating, and disposing wastewater (sewage) and industrial waste in central and northwest Orange County, Owning 400 miles of wastewater pipeline, OCSD serves 2.3 million residents in 21 cities, three special districts and the unincorporated areas within north and central Orange County. The District is governed by a board of 25 individuals; 24 board members are elected officials appointed by the cities and special districts served, and one is a representative from the Orange County Board of Supervisors. OCSD treats approximately 250 million gallons of wastewater each day and releases it into the ocean five miles from shore and approximately 200 feet below the surface. 'The one - mile -long diffuser section on the five -mile ocean outfall contains 503 portholes through which treated wastewater are slowly released. Up to seven million gallons of treated wastewater is reclaimed each day for use by the Orange County Water District in landscape irrigation and injection into the seawater intrusion barrier along the coast. 2 -3 �F TIOOT` O iWOUMMMEd MAWPARIUMMOIN In addition to its primary role of managing wastewater for north and central Orange County, OCSD is also concerned about ocean water quality and protecting the coastline from urban runoff contamination. This is why plans have been made to take diverted sewer water (and its various urban contaminants) from storm drains and treat it before releasing it to the ocean. Currently, OCSD recycles all biosolids produced for beneficial use by the agricultural industry and runs an award - winning ocean monitoring program that evaluates water quality, sediment quality and sea life. 20104 Soc ulh Oomnig5 Coc unly Vf mtawater Authority (Service PopuOzfioe n. 50D,0 O) The South Orange County Wastewater Authority ( SOCWA) was created July 1, 2001 as a .Joint Powers Authority. SOCWA was formed under and pursuant to Government Code Section 6500 and is the legal successor to the Aliso Water Management Utility, the South East Regional ]declamation Authority and the South Orange County Reclamation Authority. SOCWA is comprised of 10 member utilities including the City of Laguna Beach, City of San Clemente, City of San Juan Capistrano, El Toro Water District, (Emerald ,Bay Service District, Irvine Ranch Water District, Moulton Niguel Mater District, Santa Margarita Water District, South Coast Water District and Trabuco Canyon Water District. SOCWA provides wastewater treatment, effluent and biosolids disposal, and water recycling at regional facilities in the southern part of Orange County. SOCWA is governed by a board of Directors. As members of SOCWA's Board of Directors (one Director from each Member Agency) they each balance the interests of their oven respective District or City while continuing the purpose and mission of SOCWA's Project Committees. ZU City of Buena Park (Service Pcphn oon: 04,300) The City of Buena park (Buena Park) was incorporated in 1953; Buena Park is situated in central Orange County, with a land area of 10.3 square miles serviced by the City's water utility. Buena Park is a public municipality and is governed by an elected City Council consisting of a mayor and four councilpersons. The cities of La Mirada, Fullerton, Anaheim, La Palma, and Cypress bound Buena Park. Buena Parr has a water system with three pressure zones. The water system consists of seven active wells with one new well under construction in 2006, one 20 million gallon reservoir, one booster pump station and numerous pressure reducing stations. In addition, there are four imported water supply connections with MET. Water supply is transported to approximately 84,300 consumers through 216 miles of pipeline and approximately 19,550 service connections. Groundwater is the primary source of water for ,Buena Park, and historically has accounted for about 58 percent of total water supply. Groundwater is drawn ftom seven municipal wells that are drilled down to about 1000 feet into the Orange County Groundwater Basin. The second source of water is imported water from MET through MWDOC. um 2..4 2.1.6 Ei Two Uftl rr DlzIFoz Focpu]E°soon� -51,000L) The Ell Toro Water District (ETWD) was formed in September 1960 under provisions of the California Water District Law (Division 13, Section 34000 et seq. of the Water Code of the State on California). The District is governed by a publicly elected Board of Directors consisting of five ,Board Members. The Board of Directors establishes District policies and Rules and Regulations. The District's service area, which is nearly completely developed, includes 5,350 acres in South Orange County. ETWD is bordered by the Irvine Ranch Water District (1RWD) to the north, the Laguna Beach County Water District (LECWD) to the west, the Moulton Niguel Mater District (MNWD) to the west and south, and the Santa Margarita Water District (SMWD) to the south and cast. The District also shares a small border with Trabuco Carryon Water DDistrict (TCWD) in the northern part of the District. The District provides water and sewer service to over 51,000 customers in the cities of Laguna Woods, Laguna Hills, Lake Forest, Mission Viejo and Aliso Viejo. ETWD's responsibilities as authorized by the California Water District Law are: o Treatment and distribution of potable water for domestic consumption, irrigation and fire protection. • Collection, treatment and disposal of wastewater. • Treatment and distribution of recycled water. All of the District's domestic water demands are met from the supply imported from MET through MWDOC. ET`YVD receives imported (potable) water from MET via the Allen - McColloch Pipeline (AMP) and the East Orange County Feeder #2 (EOCF #2). 2.1.7 City of Garden Grove (Service Population. 171, B42) The City of Garden Grove (Garden Grove), recognizing the importance of the groundwater basin underlying the City, established a Municipal Water Department in 1958. The Department is the principle water retailer within the boundaries of Garden Grove. Imported water is purchased by Garden Grove from MET through MWDOC to alleviate over depletion of the groundwater basin. The percentage of import to well water changes periodically and is dependent capon OCWD groundwater projections. Garden Grove has 12 wells strategically located throughout the City, with a pumping capacity of over 41,000 gallons per minute. In 1993, the sale of water bonds allowed the City to take on many capital improvement projects to provide a safe and abundant water supply for the citizens of Garden Grove. The improvements included building a new water supply well, two new reservoirs, and upgrades to the City's import water connections and water distribution system. Careful planning and management of utility services ensures that a reliable source of potable water is readily available to the City's water users, now at a population of 171,042. The Water Services Division consists of a !professional staff responsible for ongoing operation, maintenance, repair and improvements to the City's water system. Garden Grove is governed by a 1U 2 -5 0 0 five member council. Each position is an elected position, including the position of mayor. Revenue is collected through bi-monthly water rates. Since the LAFCO Reorganization No. 141, City staff has also been responsible for the operation and maintenance of 380 miles of sewer lines, and three lift stations located throughout the City. 2,10E Ry oc La C zbm ( Swul cc,e Poo pu ftm 50,076) The City of La Habra (La Habra) was incorporated under general law on January 20, 1925, with a population of 3,000. Today, La Habra is a bedroom community located in northern Orange County with a population of nearly 52,000 residents in 7.3 square miles. La Habra operates Linder a five member Council /Manager forum of government who also act as the board of the Water /Sewer Division. La Habra possesses 125 miles of all gravity sewer pipelines with a replacement cost of $145,000,000 and 143 miles of water pipeline with a replacement cost of $110,000,000. There are three water storage tanks, one water well, six booster stations, 57 pressure reducing valves and 21 pressure zones. La Habra receives water from MET through MWDOC and from California Domestic Water Company prepared from the San Gabriel Groundwater Basin. 2.1 o9 Laqu m Beach County Water ®r ti k d X25,000) Laguna Beach County Water District (Laguna Beach) is well known as a unique beach community and artist's colony. The District provides water services to 25,000 people within an 8.5 square mile area, including portions of the City of Laguna Beach, a portion of Crystal Cove State Park and the community of Emerald Bay. Laguna Beach serves approximately 4,500 acre feet of water annually to its 8,450 customers. There are 22 water storage reservoirs with a total storage capacity of 33.5 million gallons. Laguna Beach staff operate and maintain 35 pumps in 14 pumping stations and 135 miles of distribution pipelines ranging in diameter from 4 to 16 inches. The area's sewer and storm drain services are managed by the Water Quality Department of the City of Laguna Beach. The department is organized into two divisions: Wastewater and Water Quality. Wastewater is responsible for maintaining 95 miles of sewer lines, 26 pump stations and the four -mile North Coast interceptor that transmits sewage to the regional treatment plant operated by SOCWA. Water Quality is a new division formed to implement the water quality permit approved by the San Diego Regional Water Quality Control Board in 2002. The new permit identifies multiple tasks cities and counties must complete to comply with the permit and reduce water pollution. 2,1010 Mesa Consolidated Water Nz-'N it (Service Population: Over 100,000) Mesa Consolidated Water District (Mesa) is a public utility serving more than 100,000 users within an 18 square -mile area, which includes Costa Mesa, part of Newport Beach and the John Wayne Airport. Mesa commenced operations on January 1, 1960 by acquiring the assets and obligations and assuming the responsibility of consolidating the City of Costa Mesa's Water Department, Fairview County Water District, Newport Heights Irrigation District and Newport Mesa County Water District. Mesa set a precedent with this merger as the first California water utility to consolidate two or more water utilities and assume both their assets and debts. Mesa is ul => 2 -6 0 SECTIONTWO MULTI- JURISDICTIONAL PARTICIPATIOIN governed by a publicly elected Board of Directors comprised of five directors. The Board of Directors establishes the water rates. Mesa strives to provide its customers with 100 percent groundwater, which is pumped from Orange County's natural groundwater basin via nine wells. Since its formation in 1960, Mesa's goal has been to produce the highest quality drinking water for all of our customers. 2.1.11 Moulton Niguel Water District (Service Population: over 160,000) Moulton Niguel Water District (MNWD) was formed in November 1960 under provisions of the California Water District Law, Division 13 of the Water Code of the State of California. The District is governed by a publicly elected Board of Directors comprised of seven directors. The Board of Directors establishes the water and sewer rates. MNWD is located in the southern portion of the County of Orange and provides water and sewer service to over 160,000 customers. The District is almost, entirely developed and encompasses almost all of the cities of Aliso Viejo, Laguna Niguel, Laguna Hills, about half of the city of Mission Viejo, and a portion of Dana Point. All of the potable water is imported water from MET through MWDOC and approximately 20% of the District's demand is supplied by recycled water serving landscape irrigation services. 2.1.12 City of Newport Beach (Service Population: 83,120) The City of Newport Beach (Newport Beach) was established in 1906 and is governed by a Council/Manager form of government. The City's present population is 83,120 for permanent residents and peaks at approximately 100,000 seasonally. The City's Utilities Department is responsible for providing water service, wastewater collection, oil and gas production, electrical services, and street lights to the citizens of Newport Beach. All city rates for services are set by Municipal Ordinance. Newport Beach has two sources of water: groundwater pumped from four wells in Fountain Valley and imported water from MET via MWDOC. At this time, Newport Beach pumps 69 percent of its water from wells and imports the remaining 31percent. In the next five years Newport Beach expects those percentages to adjust to 75/25 percent pumped and imported water, respectively. 2.1.13 City of Orange (Service Population: 138,000) The City of Orange is located in northern Orange County, serving an area of 23.6 square miles. The City of Orange's water system was established in October 1904 serving a population of 1,216 people. Since then, the water system has grown tremendously to support a current population of over 138,000 people. The City's water system is comprised of 16 groundwater wells, 8 connections to the imported water supply, 18 water storage tanks with a total storage capacity of over 42 million gallons, 18 pumping stations, 437 miles of pipelines, and over 34,000 service connections. Orange's water comes from two sources: the primary source is groundwater from OCWD, which makes up 64% to 75% of the supply; the second source is imported water purchased from MET through MWDOC. The city also utilizes local supply through an agreement with Serrano Water District who provides treated local runoff captured in Irvine Lake. U= 2 -7 , NN ii � C� TWO ]ZINIT-111JOFM BTU] @I TOE (iiT T11 7,7190 A The governing body of the City of Orange is a five- member Council. Under a council - manager form of government, a mayor is elected every two years and Ibur council members are elected to four -year terms alternating on a two -year basis. The City Manager, who is the administrative official of the City, is appointed by the City Council. The water rate structure and all other regulations must be approved by City Council before becoming effective. 21.14 SzM -gl r pro 1ffa� r populzuo 150,000) Santa Margarita Water District (SMWD) established in December 1964 under provisions of the California Mater District Law (Section 34000 et seq. of the California Mater Code), includes 62,674 acres in the southeastern corner of Orange County. SMWD is bounded on the north by El Toro Road in the City of Lake Forest, on the east by the Cleveland National Forest, on the south by United States Marine Corp Camp Pendleton and Orange County and on the west by the City of San Juan Capistrano and Moulton Niguel Mater District. SMWD is responsible for inter- utility coordination and long range planning to meet future water supply and wastewater treatment needs for its service area. The Cities of Mission Viejo, Rancho Santa Margarita, a portion of San Clemente and the incorporated communities of Coto de Caza, Las Flores and Ladera Ranch, as well as the remaining undeveloped portion of the Rancho Mission Viejo are within the service boundary of SMWD. The governing body of SMWD (and all improvement districts therein) is a :live- member Board of Directors, publicly elected at large for staggered four -year terms. SMWD's responsibilities as authorized by the California Mater District Law are: o Distribution of domestic water for consumption and fire protection. 0 Collection and treatment of wastewater. Distribution of recycled water along with the collection and distribution of urban return flows for irrigation purposes. Nearly 100% of the District's annual domestic water demands are imported from MET through M 4VDOC. SMWD receives imported (potable) water from MET via the regional distribution system located in Orange County (Allen�McColloch Pipeline and the East Orange County Feeder No. 2). 2.1.16 Serrano Water Nzl7k:L �Sar~ijoe Population: 6,500) Serrano Water District "Serrano) was formed in 1927 under the California Water Code and serves a population of 6,500 in the City of Villa Park and a small portion of the City of Orange. Serrano is an independent governmental body with an elected Board of Directors. It is separate and distinct from the City of Villa Park's Municipal Government. Serrano receives its water supply mostly from local surface water which is stored in Irvine !Lake and groundwater from three wells located within the City of Villa Park. Annually, Serrano provides about 3,500 acre -feet of water serving primarily large lot single family homes and one shopping center. About once every 10 � l� ;� 2 -8 �`0 11' T' j']` A) -VO MULTI - JURISDICTIONAL PARTICIPATIOIN years, Serrano supplements its local water supply with raw imported water from MET through l� WDOC Serrano owns 50 percent capacity of Irvine Lake and the dam forming the flake; Irvine Ranch Water District (IRWD) owns the other 50 percent. Serrano is the managing district for the Irvine Lake facility and its recreational aspects. The annual operation of Irvine bake varies depending on the amount of local runoff: The water Serrano receives out of Irvine Lake can be either locally generated runoff, imported water or some combination thereof. Water is supplied from Irvine Lake to the Serrano treatment plant, located about 1.5 miles away, through a 24" gravity flow supply line that has a capacity of about 17 cubic feet per second (cfs). Serrano's existing water treatment plant can produce about 3,000 gallons per minute (gpm) and its wells can produce about 2500 gpm for a peak supply of about 5,500 gpm. In recent years, Serrano has been using their treatment plant to supply 1,000 to 1,500 acre -feet of water to the City of Orange through interconnections. South Coast Water District (SCWD) is a public utility, formed by popular vote and owned by the people it serves. SCWD is a special district operating under state flaw, completely independent of county government. A Board of Directors, elected by the voters of the District, has the power to establish policies, lux rates, construct and maintain facilities and perform any other act necessary to provide water and sanitation service for present and future consumers. Day -to -day operations are administered by a general manager who is appointed by the Board of Directors. SCWD has gone through several consolidations and reorganizations to accommodate the needs of the community, as well as to provide the most efficient water and sanitary services possible. At this time the District serves approximately 12,300 water and 17,800 sewer accounts. The area serviced by SCWD has an estimated population of 40,000 residents and two million visitors a year. The District purchases imported water from MET through MWDOC. Dane to the District's hilly terrain, much of the water must be pumped and stored in reservoirs to maintain constant pressure. The District's total water storage capacity of approximately 22 million gallons is maintained in 15 reservoirs. Water is moved to upper elevations through approximately 147 miles of local mains using a system of nine pump stations. As an additional safeguard to assure the water supply, the District maintains a series of "inter- ties" with neighboring water districts which can be activated in an emergency. Additionally, recycled water is used for landscape irrigation on parks, golf courses, playgrounds and greenbelt areas. Using recycled water for landscaping irrigation frees up imported drinking water for other uses. In April of 2000, SCWD accepted the responsibility for operations and maintenance of what is now identified as the joint Regional Water Supply System (JRWSS). The JRWSS provides water transmission over a 26 mile service area to approximately 200,000 residents. JRWSS operates two storage /regulating reservoirs located in San Clemente: Bradt Reservoir with a capacity of 48 mg, and the Schlegel Reservoir with a capacity of 12 mg. I= 2 -9 N 2.1.17 Trabuco Canyon oUMd �39F co- ?o mhiUom 14,030) The Trabuco Canyon Water (District (TCWD) is a county water district organized and operating pursuant to Section 34,000 and following, of the Water Code of the State of California. The District was organized on February 26, 1962 under Division Xll of the California Water Code. The (District is governed by a five - member Board of Directors elected to alternating four -year terms at elections held every two years. Trabuco Canyon Water District is located in the southeastern portion of Orange County at the foothills of the Santa Ana Mountains and encompasses approximately 9,100 acres. The terrain within the District is generally steep hills and canyons throughout the central area of the District. The east and west sides consist of more gentle terrain made up primarily of rolling hills. Elevations within the District range from approximately 900 feet above mean sea level in the lower Aliso Creek area and the southern area of Dove Canyon, to nearly 2,400 feet in the northeasterly portion of the District adjacent to the Cleveland National Forest. Prior to 2000, the District was entirely within the unincorporated area of Orange County. In 2000, the City of Rancho Santa Margarita was incorporated and now covers the eastern portion of the District. TCWD serves an estimated population of 13,665 in the City of Rancho Santa Margarita, City of Lake Forest, and an unincorporated area of Orange County. The District provides water, wastewater and recycled water service to major communities within the District's service area. The District's sources of water supply are imported treated water, imported surface water treated at the District's water treatment plant, and treated local groundwater. To provide reliability and redundancy, the District's system is interconnected with adjacent utilities including Santa Margarita Water District, Irvine Ranch eater District, and El Toro Water District. 2.1,18 Mly of Tustin (Service Population: 65,000) The City of Tustin is a General Law city, governed by a 5- member non partisan generally elected city council under the council - manager form of government. The City is staffed with approximately 290 full -time employees with approximately 22 full -time employees within the Water Services Division. The City of Tustin (Tustin) bought the privately held Tustin Water Works in 1980. Tustin serves a population of approximately 65,000 people, with 14,500 service connections. The service area totals 8.4 square miles which includes most of the incorporated area of the City of Tustin and unincorporated areas north of the City. Currently, supply deliveries are 84 percent from groundwater and 16 percent from imported water. There are seven untreated or "clear" groundwater wells that pump directly into the distribution system. Two treatment plants treat groundwater from five additional wells to potable standards for delivery into the system. At several sites, water is blended with. other well water or imported water to reduce nitrate concentrations below the State Maximum Contaminant level (MCL). 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. :'JM 2 -10 J SECTIONTWO MULTI- JURISDICTIONAL PARTICIPATIOIN Currently, Tustin has approximately 13.83 mg of storage capacity in its six existing reservoirs and three booster stations. Water is delivered through 1.70 miles of 1.5 -inch to 20 -inch water mains. 2.1.19 City of Westminster (Service Population: 93,000) Westminster is located on eleven square miles of broad, flat coastal plain in western Orange County, five miles from the Pacific Ocean and 25 miles southeast of Los Angeles. Westminster is a general law city that operates under the Council — Manager Form of government, which is responsible for establishing water rates. The Westminster Water Division currently provides potable water to 93,000 residents and the business community using 20,000 service connections. At present, Westminster has 12 active wells and three import water connections. Two of the three imported water interties are from regionally operated pipelines shared with other agencies. On annual average, 66 percent of drinking water is produced by wells and 34 percent is .imported. The Water Division does not manage wastewater disposal or recycled water for the City. Wastewater is handled by the Midway City Sanitation District. 2.1.20 Yorba Linda Water District (Service Population: 75,000) Yorba Linda Water District (YLWD) is an independent special district that provides water and sewer service to residents and businesses within its service area. The District's history dates back to 1909, when local farmers and ranchers formed the Yorba Linda Water Company. In 1959, the voters elected to create a public utility with the assets of the Water Company, and the YLWD was formed under the California Water District Law, Division 13 of the Water Code of the State of California. The District is governed by a publicly elected Board of Directors comprised of five Directors who serve four year terms. The Directors set District policies and programs, provide general oversight of District activities, set water and sewer rates, and employ the general manager to direct the activities of the District. YLWD provides water and sewer services to most of Yorba Linda, and to portions of Placentia, Anaheim, Brea, and unincorporated Orange County. From 1959 through the mid- 1970s, the District experienced a gradual transition from a rural, agriculturally orientated area to a suburban community. In 1978, YLWD Board of Directors agreed to annex lands to the east of then current boundaries that more than doubled the District's size. YLWD purchases imported water from MET through MWDOC to provide up to 50% of its demand for its more than 23,000 service connections. The remaining water comes from the District's local production wells which are pumped from the OC WD groundwater basin. un 2 -11 SECTIONFIVE TUSTIN RiskAssessment 5.23 TUSTIN - OBJECTIVE, GOALS AND ACTIONS The City of Tustin (Tustin) reviewed a set of jurisdictional -level hazard maps including detailed critical facility information and localized potential hazard exposure /loss estimates to help identify the top hazards threatening their jurisdiction. See Section 4.0 for additional details. Tustin Loss Assessment Table is located at the end of this section. As a note, the City of Tustin disagrees with the Loss Estimates identified by the Hazus program for fire threat to the City. Utilizing Hazus, current jurisdiction infrastructure maps, and fire hazard maps the Loss Estimate shows Tustin has having no fire threat identified. In consideration of recent fire activity Tustin feels it important to note its concern for protection of its infrastructure from fire and has provided additional information supporting their position. Tustin water service facilities have been geographically very close to three major fires in recent years: Baker Canyon Fire in October 1997, Holy Jim / Santiago Canyon Fire in September 1998, and the Sierra Fire in February 2006. In each incident Tustin activated its emergency operations center in preparation for potential evacuations, and impact to services. During the Sierra Fire OCFA requested the Tustin Police Department to be present at the Incident Command Post to assist in the Planning Section Incident Action Planning process. In addition while at the Incident Command Post the OCFA notified Tustin of its vulnerability to urban wildland fires, especially in the northeast portion of the City and the north/central unincorporated water service area. 5.23.2 Capability Assessment The LPG identified current capabilities available for implementing hazard mitigation activities. The Capability Assessment (Assessment) portion of the jurisdictional mitigation plan identifies administrative, technical, legal and fiscal capabilities. This includes a summary of departments and their responsibilities associated to hazard mitigation planning as well as codes, ordinances, and plans already in place associated to hazard mitigation planning. The second part of the Assessment provides Tustin's fiscal capabilities that may be applicable to providing financial resources to implement identified mitigation action items. VIM MAWeroc \section 5 HM.aoc125,1an -07\SOC 5 -162 0 SECTIONFIVE TUSTIN Risk Assessment 5.23.3 Existing Institutions, Plans, Policies and Ordinances The legal and regulatory capabilities of Tustin are shown in Table 5.23.3 -1, which presents the existing ordinances and codes that affect the physical or built environment of Tustin. Examples of legal and/or regulatory capabilities can include: the City's building codes, zoning ordinances, subdivision ordinances, special purpose ordinances, growth management ordinances, site plan review, general plans, capital improvement plans, economic development plans, emergency response plans, and real estate disclosure plans. Table 5.233 -1 Legal and Regulatory Capability X= MAWeroc\Secfion 5 HM.doc125,Jan-0ASDG5-163 Local State Other Level Regulatory Tools (ordinances, codes, plans) Authority Authority Auth ity Author ity Comments (Yes /No) (Yes /No) (Yes /No) Local A. Building code Yes No Yes OCFA AQMD UBC B. Zoning ordinance Yes No No C. Subdivision ordinance or regulations Yes No Yes Local County of Orange County of Orange —RDMD Army Corps of Engineers D. Special purpose ordinances (floodplain USFWS /CDFG management, storm water management, Yes No Yes hillside or steep slope ordinances, wildfire Regional Water Quality Control ordinances, hazard setback requirements) Board (RWQCB) OCFA Resource Agencies Local E. Growth management ordinances (also called LAFCO "smart growth" or anti - sprawl programs) Yes No Yes County of Orange OCFA Local F. Site plan review requirements Yes No Yes County of Orange OCFA G. General or comprehensive plan Yes No No H. HA apital improvements plan Yes No No I. economic development plan No No No X= MAWeroc\Secfion 5 HM.doc125,Jan-0ASDG5-163 SECTIONFIVE 7 a� -27RFi\\� GAS 5�' 3'�mP" 5 547flP "vi The following is a summary of existing departments in Tustin and their responsibilities related to hazard mitigation planning and implementation, as well as existing planning documents and regulations related to mitigation efforts within the community. The administrative and technical capabilities of Tustin, as shown in Table 5.23.4 -1, provides an identification of the staff, personnel, and department resources available to implement the actions identified in the mitigation section of the Plan. Specific resources reviewed include those involving technical personnel such as planners /engineers with knowledge of land development and land management practices, engineers trained in construction practices related to building and infrastructure, planners and engineers with an understanding of natural or manmade hazards, floodplain managers, surveyors, personnel with G1S skills and scientists familiar with hazards in the community. UM MAWeroc\sectloo 5 HM.docl25 -Jan-0 ns oc 5 -1 64 ��a� �QaQe O'1her Level Regulatory Tools (ordinances, codes, plans) A uthorlly AulhorKy J udsdiclion Ce TnMents (Yes /No) (Yes /Mo) A u'lhor?'ty Local J. An emergency response plan Yes No Yes State FEMA K. A post - disaster recovery plan Yes No No NIMS Local County of Orange State of California L. A post - disaster recovery regulation Yes Yes Yes AQMD EPA FEMA Dept. of Health Services Local M. Real estate disclosure requirements Yes No Yes Tax Assessor State Real Estate Board N. Ca -DHS Yes No Yes 0. Title M & 22 (potable) USEPA Yes No Yes P. Air Quality — AQMD Yes No Yes Q. OSHA Yes No Yes R. State Water Code Yes No Yes The following is a summary of existing departments in Tustin and their responsibilities related to hazard mitigation planning and implementation, as well as existing planning documents and regulations related to mitigation efforts within the community. The administrative and technical capabilities of Tustin, as shown in Table 5.23.4 -1, provides an identification of the staff, personnel, and department resources available to implement the actions identified in the mitigation section of the Plan. Specific resources reviewed include those involving technical personnel such as planners /engineers with knowledge of land development and land management practices, engineers trained in construction practices related to building and infrastructure, planners and engineers with an understanding of natural or manmade hazards, floodplain managers, surveyors, personnel with G1S skills and scientists familiar with hazards in the community. UM MAWeroc\sectloo 5 HM.docl25 -Jan-0 ns oc 5 -1 64 ��s!�MEIFIV a 1UZ7P] ,1 � 'Cable 5.23.4 -1 Adhuamm5sfraQnae and 7echi nnneal CCnpnc5ty Staff/Personnel Resources Yes /No CrDepar2rrosnVAgancy and PosMon A. Planner(s) or engineer(s) With knowledge of land development and land No Community Development, Contract Services management practices B. Engineer(s) or professional(s) trained in Inspectors, Public Works, Building construction practices related to buildings Yes and /or infrastructure In-house and Outside Consultants C. Planners or Engineer(s) with an WEROC understanding of natural and /or human- Yes Contract Services caused hazards Water Services D. Floodplain manager Yes County of Orange — RDMD E. Surveyors No Outside F. Staff with education or expertise to assess No Contract Services the community's vulnerability to hazards G. Personnel skilled in GIS and /or HAZUS No Contract Services H. Scientists familiar with the hazards of the No County, USGS community I. Emergency manager Yes Public Works, Operational Area, WEROC J. Grant writers Yes Planning Dept., Engineering Dep. V iMi MAWeroc \Section 5 HM.doc\25- Jan -07\SDG 5 -165 0 \ J SECTIONFIVE TUSTIN Risk Assessment 5.23.5 Fiscal Capability Table 5.23.5 -1 shows specific financial and budgetary tools available to Tustin such as community development block grants; capital improvements project funding; authority to levy taxes for specific purposes; fees for water, sewer, gas, or electric services; impact fees for homebuyers or developers for new development; ability to incur debt through general obligations bonds; and withholding spending in hazard -prone areas. Table 5.23.5 -1 Fiscal Capability .Financial Resources Accessible or Eligible to Use (Yes /No /Don't Know) Community Development Block Grants (CDBG) Yes Capital improvements project funding Yes Authority to levy taxes for specific purposes Don't Know Fees for water, sewer, gas, or electric service Yes Impact fees for homebuyers or developers for new developments /homes Yes Incur debt through general obligation bonds No Incur debt through special tax and revenue bonds Yes Incur debt through private activity bonds Don't Know Withhold spending in hazard -prone areas Don't Know 5.23.6 Local Mitigation Capability Assessment Tustin will identify their Summary Local Mitigation Capabilities Assessment and contacts for their jurisdiction's yearly update, to be incorporated in the five year update of the Plan. Listed below are Tustin's specific hazard mitigation goals, objectives and related potential actions. For each goal, one or more objectives have been identified that provide strategies to attain the goal. Where appropriate, the City has identified a range of specific actions to achieve the objective and goal. The goals and objectives were developed by considering the risk assessment findings, localized hazard identification and loss /exposure estimates, and an analysis of the jurisdiction's current capabilities assessment. These preliminary goals, objectives and actions were developed to represent a vision of long- term hazard reduction or enhancement of capabilities. To help in further development of these goals and objectives, the LPG compiled and reviewed current jurisdictional sources including the City's planning documents, codes, and ordinances. In addition, City representatives met with consultant staff and/or VIM MAWeroc \Section5HM.doc\25- Jan -0TSDG5 -166 SECTIONFIVE TUSTIN Risk Assessment MWDOC to specifically discuss these hazard- related goals, objectives and actions as they related to the overall Plan. The LPG members were Kathy Barr and Joe Meyers. Once developed, City staff presented them to the Tustin City Council for their approval. Public meetings were held throughout the County to present these preliminary goals, objectives and actions to citizens and to receive public input. At these meetings, specific consideration was given to hazard identification /profiles and the vulnerability assessment results. The following sections present the hazard- related goals, objectives and actions as prepared by Tustin's LPG in conjunction with the Hazard Mitigation Working Group, locally elected officials, and local citizens. 5.23.7 City of Tustin Goals Goal 1: Reduce Agency's Vulnerability to Disruption Objective 1: Improve site security Action 1: Implement Vulnerability Risk Assessment recommendations Action 2: Survey and improve site fencing Objective 2: Improve response time Action 2: Keep Emergency Operations Plan up -to -date IMPLEMENTATION STRATEGY: Agency constructs site improvements as respective facilities are scheduled for replacement or refurbishment. Projects are implemented as funding is approved as part of annual budget process or available through financial assistance programs. Goal G2: Minimize Water Loss (Ensure Reliable Supply) During Disaster Events Objective 1: Reduce reservoir water losses Action 1: Improve reservoir structures for seismic activity Action 2: Install seismic valves at critical reservoir sites Action 3: Install flexible coupling at reservoir sites Objective 2: Increase available water supplies Action 1: Loop water sources where possible Action 1: Maintain supply sources Objective 3: Protect existing assets with the highest vulnerability to the effects of natural disasters Action 1: Conduct inspections to ensure seismic retrofitting is in place un MA Weroc \Sectlon5HM.doc\25Jan -07\SDGS-167 0 SECTIONFIVE TUSTIN Risk Assessment Action 2: Secure above ground assets in all buildings and at well sites Objective 4: Coordinate and support existing efforts to mitigate natural disaster hazards Action 1: Continue to use current building and infrastructure codes, standards and guidelines Action 2: Continue to follow current plans and guidelines IMPLEMENTATION STRATEGY: Contract for engineering studies of site - specific recommendations for structural stiffening and flexible coupling installation. Acquire funding to install seismic valves. Continue to coordinate with neighboring districts for interties. Goal G3: Protect Water Pumping and Water Production System Reliability Objective 1: Improve local production capacity Action 1: Construct Pasadena Avenue Well Action 2: Construct Tustin Avenue Well Objective 2: Increase Potable Water Storage Action 1: Reconstruct Rawlings Reservoir Action 2: Reconstruct Simon Ranch Reservoir IMPLEMENTATION STRATEGY: Staff will coordinate with neighboring water districts, East Orange County Water District, Municipal Water District of Orange County (MWDOC), and Metropolitan Water District of Southern California (MET) to prioritize and implement projects on a regional basis. Goal G4: Protect the Public Water Supply from Contamination Caused by Backflow or Back - siphonage in the Event of an Earthquake Objective 1: Upgrade all potential hazardous potable water services with the required backflow prevention device as needed to prevent backpressure or back - siphonage that could contaminate the public water supply Action 1: The City is continually monitoring the public water supply and requiring the installation of backflow prevention devices on all hazardous potable services X= MAWeroc\Secbon 5 HMAW25- Jan -01ASDG5 -168 SECTIONFIVE TUSTIN Risk Assessment Action 2: Require all single -check fire systems in the Agency to be upgraded to a Double -Check Detector Assembly Goal G5: Protect the public water supply from contamination or service interruption in the event of a fire. Objective 1: Adopt policy for design of non - combustibles facilities to reduce the threat and impact of urban/wildfires on structures. Action 1: Establish design standards requiring all facilities to be designed with non - combustible materials Objective 2: Provide routine maintenance around the facilities and reduce fuel sources to avoid the chance of fire threat. Action 2: Establish routine and regular maintenance schedules for all facilities to ensure that fuel sources have been removed. Objective 3: Adopt policy to upgrade existing facilities or install at new facilities fire detection systems that are most effective. Action 3: In coordination with City of Tustin building codes and Orange County Fire Authority guidelines upgrade existing or install new fire detection systems that meet current fire detection standards. 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