Glendale (PDF) - Hazard Mitigation Web Portal - State of California

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Natural Hazards Mitigation PlanCity of Glendale, CaliforniaSection 3 – Risk AssessmentTable 3.1: List of Maps that are Part of this Local Natural Hazards Mitigation PlanMap/Plate Type of Map Section of the Plan1.1 City of Glendale (boundaries and major roads) Section 1: IntroductionFreeways and Major Arterials in the Glendale2.1Section 2: Community ProfileArea2.2 Regional Active and Potentially Active Faults Section 2: Community Profile3.1 Critical Facilities and Infrastructure Map Section 3: Risk Assessment6.1 Faults in and Near Glendale Section 6: Earthquakes6.2 Ground Shaking Zones in California Section 6: EarthquakesEarthquake Scenario for the 1857 San Andreas Section 6: Earthquakes6.3Fault Rupture6.4 Scenario for a M6.7 EQ on the Verdugo Fault Section 6: Earthquakes6.5 Scenario for a M6.5 EQ on the Raymond Fault Section 6: EarthquakesDistribution and Severity of Damaged Residential Section 6: Earthquakes6.6 Buildings in Glendale as a Result of ThreeDifferent Earthquake ScenariosDistribution and Severity of Damaged Commercial Section 6: Earthquakes6.7 Buildings in Glendale as a Result of ThreeDifferent Earthquake ScenariosDistribution and Severity of Damaged Schools in Section 6: Earthquakes6.8 Glendale as a Result of Three DifferentEarthquake ScenariosDistribution of Damaged Bridges in Glendale as a Section 6: Earthquakes6.9Result of Three Different Earthquake Scenarios7.1 Historical Wildfires in the Glendale Area Section 7, same as H-67.2 Fire Hazard Areas in Glendale Section 7, same as H-7Geomorphic Map of Glendale Showing the8.1Section 8, same as H-1Canyons Referred to in the Text8.2 Effects of the 1934 Flood in Glendale Section 8, same as H-98.3 Dam Inundation Areas in Glendale Section 8, same as H-109.1 Geologic Map of Glendale Section 9, same as H-29.2 Slope Instability Map of the Glendale Area Section 9, same as H-11H-1 Geomorphic Map of Glendale Sections 1, 2, 6 – 9, Appendix HH-2 Geologic Map of Glendale Sections 1, 2, 6, 8-9, Appendix HH-3 Historical Seismicity in Glendale Section 6, Appendix HH-4 Fault Map of Glendale Section 6, Appendix HH-5 Seismic Hazards Map of Glendale Section 6, 7, 9, Appendix HH-6 Historical Wildfires in Glendale Section 7, Appendix HH-7 Fire Hazard Areas in Glendale Section 7, Appendix HH-8 Non-Compliant Roads in Glendale Section 7, Appendix HH-9 Damage Resulting from 1934 Floods in Glendale Section 8, Appendix HH-10 Dam Inundation Pathways in Glendale Section 8, Appendix HH-11 Slope Instability Map Section 9, Appendix HH-12 Critical Facilities and Infrastructure in Glendale Sections 2, 3,Note: These maps were derived from data provided by the City and/or publicly available sources. Care was taken inthe creation of these maps, but the maps are provided "as is." The City of Glendale cannot accept any responsibilityfor errors, omissions or positional accuracy, and therefore, there are no warranties that accompany these maps.Although information from land surveys may have been used in the creation of these maps, this does not mean thatthe maps represent or constitute a land survey. Users are cautioned to field verify the information on these productsbefore making any decisions.The critical facilities in Glendale have been identified and are illustrated in Map 3.1 and inPlate H-12 (Appendix H). This Plan includes a community issues summary in each hazardsection to identify the most vulnerable and problematic areas in the city, including criticalfacilities, and other public and private properties. Additional information on essentialstructures and infrastructure has been withheld for security reasons. The inventory isavailable at the Emergency Operations Center from the EOC Coordinator.2006 PAGE 3 - 2
Natural Hazards Mitigation PlanCity of Glendale, CaliforniaSection 3 – Risk Assessment4) Risk AnalysisThe purpose of this task is to estimate the potential losses in a geographic area over a givenperiod of time by assessing the damage, injuries, and financial costs likely to be sustained.This level of analysis involves using mathematical models. The two measurablecomponents of risk analysis are magnitude of the harm that may result and the likelihood ofthe harm occurring. Describing vulnerability in terms of dollar losses provides thecommunity and the State with a common framework by which to measure the potentialeffects of a given hazard on the assets of the area.5) Assessing Vulnerability/ Analyzing Development TrendsThis task provides a general description of land uses and development trends within thecommunity so that mitigation options can be considered in land use planning and futureland use decisions. This Plan provides comprehensive description of the character ofGlendale in the Community Profile section (see Section 2). This description includes thegeography and environment, population and demographics, land use and development,housing and community development, employment and industry, and transportation andcommuting patterns. Analyzing these components of Glendale can help in identifyingpotential problem areas, and can serve as a guide for incorporating the goals and ideascontained in this Mitigation Plan into other community development plans.Hazard assessments are subject to the availability of hazard-specific data. Gathering data for ahazard assessment requires a commitment of resources on the part of participatingorganizations and agencies. Each hazard-specific section of the Plan includes a section onhazard identification using data and information from City, County or State agency sources.A loss estimate for the city of Glendale was conducted for the hazard of earthquakes. Thisestimate was done using HazUS, a standardized methodology for earthquake loss estimationbased on a geographic information system (GIS). HazUS was created as a project of theNational Institute of Building Sciences, funded by the Federal Emergency Management Agency(FEMA), and it is based on guidelines and procedures developed to make standardized lossestimates at a regional scale (allowing estimates to be compared from region to region). HazUSis designed for use by State, regional and local governments in planning for loss mitigation,emergency preparedness, response and recovery. HazUS addresses nearly all aspects of thebuilt environment, and many different types of losses, and newer components of the programallow loss estimates for hurricanes, and floods in addition to earthquakes. The earthquakecomponent has been tested against the experience of several past earthquakes, and against thejudgment of experts.The HAZUS analysis conducted for Glendale indicates that an earthquake on the Sierra Madre,Verdugo or Raymond faults has the potential to cause significant damage in the city. Anearthquake on either the Sierra Madre or Verdugo fault could cause moderate damage to asmany as 5,000 structures, amounting to about 15 percent of the total building stock in the area.An earthquake on any of these three faults also has the potential to impact several of Glendale’scritical and essential facilities: several schools and bridges are anticipated to be at leastmoderately damaged. The potable water and electricity systems are anticipated to be damagedsignificantly, with thousands of costumers potentially without water or power for days after theearthquake. Specifics regarding these earthquake loss estimates are provided in Section 6 of thisreport.Vulnerability assessments and risk analyses for the other hazards addressed in the Plan,including floods, wildfires, and landslides, were not conducted, although qualitative assessments2006 PAGE 3 - 3
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NOTES:This map is intended for gene
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City of GlendaleUpdateHazard Mitiga
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Similar to Safety ElementIncludesEa
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HospitalsPartnershipsWithin City an
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Impact on CityMost significant area
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