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Multi-Jurisdictional Hazard Mitigation Plan San Diego County, Ca

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Multi-Jurisdictional Hazard Mitigation Plan San Diego County, Ca MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN SAN DIEGO COUNTY, CA Participating Jurisdictions: Carlsbad National City Chula Vista Oceanside Coronado Poway Del Mar San Diego El Cajon San Marcos Encinitas Santee Escondido Solana Beach Imperial Beach Vista La Mesa County of San Diego Lemon Grove Prepared for: March, 2004 FINAL SAN DIEGO COUNTY MULTI-JURISDICTION HAZARD MITIGATION PLAN SAN DIEGO COUNTY, CALIFORNIA PREPARED FOR: COUNTY OF SAN DIEGO URS PROJECT NO. 27653042.00500 MARCH 15, 2004 This page intentionally left blank. TABLE OF CONTENTS Section 1 Introduction ......................................................................................................1-1 1.1 Plan Description/Purpose of Plan ..........................................................................1-1 1.2 Plan Purpose and Authority...................................................................................1-2 1.3 Community Description.........................................................................................1-3 1.3.1 The County of San Diego..........................................................................1-3 1.3.2 Local Jurisdictions ....................................................................................1-6 Section 2 Multi-Jurisdictional Participation Information...............................................2-1 2.1 List of Participating and Non-Participating Jurisdictions......................................2-1 2.2 Description of Each Jurisdiction’s Participation in the Planning Process .............2-1 Section 3 Planning Process Documentation ..................................................................3-1 3.1 Description of Planning Committee Formation.....................................................3-1 3.2 Name of Planning Committee and its Members....................................................3-1 3.3 Hazard Mitigation Working Group Meetings........................................................3-2 3.4 Planning Process Milestones .................................................................................3-2 3.5 Public Involvement................................................................................................3-4 3.6 Existing Plans or Studies Reviewed ......................................................................3-5 Section 4 Risk Assessment..............................................................................................4-1 4.1 Overview of the Risk Assessment Process............................................................4-1 4.1.1 Identifying Hazards...................................................................................4-1 4.1.2 Profiling Hazards ......................................................................................4-1 4.1.3 Identifying Assets .....................................................................................4-2 4.1.4 Assessing Vulnerability ............................................................................4-2 4.1.5 Analyzing Development Trends ...............................................................4-2 4.2 Hazard Identification and Screening......................................................................4-2 4.2.1 List of Hazards Prevalent in the Jurisdiction ............................................4-2 4.2.2 Hazard Identification Process ...................................................................4-3 4.2.3 Hazard Identification Sources...................................................................4-6 4.2.4 Non-Profiled Hazards ...............................................................................4-6 4.3 Hazard Profiles ......................................................................................................4-7 4.3.1 Coastal Storms, Erosion and Tsunami ......................................................4-8 4.3.2 Dam Failure ............................................................................................4-12 4.3.3 Earthquake ..............................................................................................4-15 4.3.4 Flood .......................................................................................................4-20 4.3.5 Rain-Induced Landslide ..........................................................................4-25 4.3.6 Liquefaction ............................................................................................4-28 4.3.7 Structure/Wildfire Fire............................................................................4-31 4.3.8 Manmade Hazards...................................................................................4-34 4.4 Vulnerability Assessment ....................................................................................4-39 4.4.1 Asset Inventory .......................................................................................4-39 4.4.2 Estimating Potential Exposure and Losses, and Future Development Trends .....................................................................................................4-40 4.5 Multi-Jurisdictional Assessment..........................................................................4-82 W:\27653042\00500 Hazard Mitigation Plan\FINAL\00500-c-r.doc\9-Mar-04\SDG i TABLE OF CONTENTS 4.5.1 Analysis of Land Use..............................................................................4-82 4.5.2 Analysis of Development Trends............................................................4-84 Section 5 Goals, Objectives and Actions........................................................................5-1 5.1 Overview ...............................................................................................................5-1 5.2 Regional Considerations........................................................................................5-2 5.3 City of Carlsbad.....................................................................................................5-3 5.3.1 Capabilities Assessment............................................................................5-4 5.3.2 Goals, Objectives and Actions..................................................................5-7 5.4 City of Chula Vista ..............................................................................................5-15 5.4.1 Capabilities Assessment..........................................................................5-16 5.4.2 Goals, Objectives and Actions................................................................5-22 5.5 City of Coronado .................................................................................................5-39 5.5.1 Capabilities Assessment..........................................................................5-40 5.5.2 Goals, Objectives and Actions................................................................5-43 5.6 City of Del Mar....................................................................................................5-53 5.6.1 Capabilities Assessment..........................................................................5-54 5.6.2 Goals, Objectives and Actions................................................................5-57 5.7 City of El Cajon...................................................................................................5-65 5.7.1 Capabilities Assessment..........................................................................5-66 5.7.2 Goals, Objectives and Actions................................................................5-69 5.8 City of Encinitas ..................................................................................................5-79 5.8.1 Capabilities Assessment..........................................................................5-81 5.8.2 Goals, Objectives and Actions................................................................5-83 5.9 City of Escondido ................................................................................................5-99 5.9.1 Capability Assessment ..........................................................................5-100 5.9.2 Goals, Objectives and Actions..............................................................5-105 5.10 City of Imperial Beach.......................................................................................5-119 5.10.1 Capabilities Assessment........................................................................5-120 5.10.2 Goals, Objectives and Actions..............................................................5-123 5.11 City of La Mesa .................................................................................................5-135 5.11.1 Capabilities Assessment........................................................................5-136 5.11.2 Goals, Objectives and Actions..............................................................5-139 5.12 City of Lemon Grove.........................................................................................5-147 5.12.1 Capabilities Assessment........................................................................5-148 5.12.2 Goals, Objectives and Actions..............................................................5-151 5.13 City of National City .........................................................................................5-157 5.13.1 Capabilities Assessment........................................................................5-158 5.13.2 Goals, Objectives and Actions..............................................................5-161 5.14 City of Oceanside ..............................................................................................5-171
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