TECHNICAL BACKGROUND REPORT TO THE SAFETY ELEMENT OF THE 2035 GENERAL PLAN Presentation to Coachella’s City Council October 8, 2014
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TECHNICAL BACKGROUND REPORT TO THE SAFETY ELEMENT OF THE 2035 GENERAL PLAN
Presentation to Coachella’s City Council October 8, 2014
SAFETY ELEMENT
Mandatory component of the General Plan
Discusses natural and man-made hazards
Provides mitigation actions Discusses disaster preparedness,
response and recovery
REPORT SECTIONS
Chapter 1: Seismic Hazards Chapter 2: Geologic Hazards Chapter 3: Flood Hazards Chapter 4: Fire Hazards
Chapter 5: Hazardous Materials Management Chapter 6: Severe Weather Hazards
Chapter 7: Disaster Preparedness, Response and Recovery
Appendix A: References Appendix B: Glossary
Chapter 1: SEISMIC HAZARDS
Regulatory framework Notable Historic Earthquakes
Seismic Shaking Emphasis on the ShakeOut Scenario
Fault Rupture Liquefaction
Earthquake-Induced Landslides
FAULTS AND HISTORICAL SEISMICITY
LIQUEFACTION AND SLOPE INSTABILITY
HAZUS EARTHQUAKE SCENARIOS
M7.8, Southern San Andreas fault M7.1, Coachella segment of San Andreas fault
Software created for FEMA; runs on ArcGIS platform; analyses conducted by a certified HazUS Trained Professional Estimates losses resulting from earthquakes, floods and hurricanes Uses Census data; user-modified to better represent conditions
HAZUS RESULTS
M7.8 ShakeOut Scenario
M7.1 Coachella Segment Scenario
Building-Related Economic Losses
>$880 million >$260 million
Building Damage 3,700 moderately; 500 extensively; 3,000 completely
980 moderately; 1,300 extensively; 260 completely
Injuries Fatalities
250-400 10-27
52-62 1-2
Damage to Utilities Severe; no water or electric power for > 3 months
Minor; 1000’s of households with no water for 1 week
Damage to Critical Facilities Extensive damage to schools and hospitals
Moderate damage to schools and hospitals
Chapter 2: GEOLOGIC HAZARDS
Landslides and unstable slopes Compressible, collapsible, expansive and
corrosive soils Ground subsidence
Erosion and wind-blown sand
Chapter 3: FLOOD HAZARDS
SEISMICALLY INDUCED INUNDATION
HAZUS LOSS SCENARIO
500-year flood on Whitewater River
Building-Related Losses >$187 Million
Buildings >280 extensively damaged >2,200 slightly to moderately damaged
Critical Facilities Many moderately damaged; none will be substantially damaged
Chapter 4: FIRE HAZARDS
Vegetation fires Structure fires Chemical Fires
Fires after an Earthquake Fire Suppression Services
Chapter completed with significant input from the Riverside County Fire Department and Battalion Chief De La Cruz
HIGH FIRE HAZARD AREAS
Chapter 5: HAZARDOUS MATERIALS MANAGEMENT
Superfund, Cortese, Toxic Release Inventory, EPA-registered Generators
Leaking Underground Storage Tank Sites Drinking Water Quality
Household Hazardous Waste & Recycling Releases due to Transportation Accidents
Earthquake-Induced Releases
HAZARDOUS MATERIALS SITES
Chapter 6: SEVERE WEATHER
High Winds Hail
Temperature Extremes Drought
Chapter 7: DISASTER PREPAREDNESS
Risk Analysis Impact to Critical Facilities Potential Evacuation Routes Potential Shelter Locations
Potential Emergency Shelters and Evacuation Routes
THANK YOU!
ANY QUESTIONS?
Tania González Vice-President, Sr. Consultant
Earth Consultants International, Inc. [email protected]
714-412-2654
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