City of Irvine
2020 Local Hazard Mitigation Plan
T ABLE OF C ONTENTS CHAPTER 1 – INTRODUCTION ................................................................1 PLAN PURPOSE AND AUTHORITY .............................................................................. 1 Federal Authority .................................................................................................................................. 2 State Authority ...................................................................................................................................... 2 PLAN ORGANIZATION AND USE.................................................................................. 3 PLAN GOALS ................................................................................................................. 3 PLANNING PROCESS ................................................................................................... 5 Hazard Mitigation Planning Committee ................................................................................................ 5 Public Engagement................................................................................................................................ 7 Public Review Draft ............................................................................................................................... 8 Plan Revision and Adoption................................................................................................................... 9 Plan Resources ...................................................................................................................................... 9 CHAPTER 2 - COMMUNITY PROFILE ....................................................11 SETTING AND LOCATION........................................................................................... 11 HISTORY ...................................................................................................................... 11 DEMOGRAPHICS......................................................................................................... 12 ECONOMY AND COMMUTE PATTERNS.................................................................... 15 DEVELOPMENT TRENDS ........................................................................................... 16 MAJOR COMMUNITY ELEMENTS .............................................................................. 18 Residential Uses .................................................................................................................................. 18 Institutional Uses................................................................................................................................. 18 Irvine Spectrum................................................................................................................................... 18 Irvine Business Complex...................................................................................................................... 18 Open Space ......................................................................................................................................... 18 INFRASTRUCTURE ASSESSMENT ............................................................................ 19 Electricity............................................................................................................................................. 19 Cabrillo Substation Power Outage....................................................................................................... 19 Public Safety Power Shutoff ................................................................................................................ 20 Fossil Fuel ............................................................................................................................................ 21 Water and Wastewater ....................................................................................................................... 21 Transportation..................................................................................................................................... 22 CHAPTER 3 - RISK ASSESSMENT ........................................................25 HAZARD IDENTIFICATION .......................................................................................... 25 HAZARD SCORING AND PRIORITIZATION................................................................ 29 HAZARD PROFILES..................................................................................................... 31 Aircraft Incident .................................................................................................................................. 31 Dam Failure ......................................................................................................................................... 35 Diseases and Pests .............................................................................................................................. 38 Drought ............................................................................................................................................... 45 Flooding (Sea Level Rise) ..................................................................................................................... 49 Geologic Hazards................................................................................................................................. 53
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