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Tri-Valley Local Hazard Mitigation Plan; Volume 1—Planning-Area-Wide Elements x Figure 4-4. Critical Facilities (1 of 2) ..................................................................................................................... 4-9 Figure 4-5. Critical Facilities (2 of 2) ................................................................................................................... 4-10 Figure 4-6. Planning Area Critical Facilities by Jurisdiction and Category ......................................................... 4-11 Figure 4-7. Residential Building Permit Trends, 2005 to 2021 ............................................................................ 4-11 Figure 4-8. Alameda County vs. Planning Area Population Growth ................................................................... 4-13 Figure 4-9. Planning Area Age Distribution ........................................................................................................ 4-15 Figure 4-10. Planning Area Race Distribution ..................................................................................................... 4-15 Figure 4-11. Industry in the Planning Area by Population Employed ................................................................. 4-17 Figure 4-12. Occupations in the Planning Area ................................................................................................... 4-18 Figure 4-13. California State and Planning Area Unemployment Rate ............................................................... 4-18 Figure 8-1. Combined Dam Failure Inundation ..................................................................................................... 8-6 Figure 8-2. Population Exposed to Dam Failure and Total Population, by Jurisdiction ........................................ 8-7 Figure 8-3. Number and Exposed Value of Buildings in Dam Failure Inundation Area ....................................... 8-8 Figure 8-4. Total Value in Dam Failure Inundation Area as % of Total Replacement Value, by Jurisdiction ...... 8-8 Figure 8-5. Number of Structures within the Dam Failure Inundation Zone, by Occupancy Class ....................... 8-9 Figure 8-6. Critical Facilities within the Dam Failure Inundation Area, by Jurisdiction ..................................... 8-10 Figure 8-7. Estimated Persons Displaced or Requiring Short-Term Shelter Due to Dam Failure ....................... 8-11 Figure 8-8. Loss Estimates for Dam Failure ......................................................................................................... 8-13 Figure 8-9. Number of Buildings Impacted by Dam Failure ................................................................................ 8-13 Figure 8-10. Estimated Structural Debris Generated by Dam Failure .................................................................. 8-13 Figure 8-11. Estimated Damage to Critical Facilities from Dam Failure ............................................................. 8-14 Figure 9-1. Standard National Drought and Precipitation Indices ......................................................................... 9-3 Figure 9-2. Zone 7 Water Agency Supply and Use, Fiscal Year 2019-2020 ......................................................... 9-6 Figure 9-3. Records of Statewide Drought in California Since 2000 ................................................................... 9-10 Figure 9-4. Palmer Drought Severity Index, January 2023 .................................................................................. 9-13 Figure 9-5. U.S. Drought Monitor Map of Planning Area Drought Conditions, June 2023 ................................ 9-13 Figure 9-6. Percent of Alameda and Contra Cosa Counties Affected by Each USDM Rating, 2000 – 2023 ...... 9-14 Figure 10-1. Peak Acceleration (%g) with 2% Probability of Exceedance in 50 Years ...................................... 10-5 Figure 10-2. Recent Earthquakes Magnitude 5.0 or Larger Near Planning Area ................................................. 10-7 Figure 10-3. Significant Known Faults in the Bay Area ...................................................................................... 10-9 Figure 10-4. NEHRP Soils Soil Classification ................................................................................................... 10-11 Figure 10-5. Liquefaction Susceptibility ............................................................................................................ 10-12 Figure 10-6. PGA (as %g) with 10-Percent Probability of Exceedance in 50 Years ......................................... 10-13 Figure 10-7. Population Living on NEHRP D Soils and Total Population, by Jurisdiction .............................. 10-14 Figure 10-8. Number and Exposed Value of Buildings on NEHRP D Soils...................................................... 10-15 Figure 10-9. Total Value on NEHRP D Soils as Percent of Total Replacement Value, by Jurisdiction ............ 10-15 Figure 10-10. Number of Structures on NEHRP D Soils, by Occupancy Class ................................................ 10-16 Figure 10-11. Critical Facilities on NEHRP D Soils, by Category and Jurisdiction .......................................... 10-17 Figure 10-12. Calaveras (No) M6.86 Earthquake Scenario ............................................................................... 10-18 Figure 10-13. Greenville (No) M6.86 Earthquake Scenario .............................................................................. 10-19 Figure 10-14. HayWired M7.05 Earthquake Scenario ....................................................................................... 10-20 Figure 10-15. Las Positas M6.5 Earthquake Scenario ........................................................................................ 10-21 Figure 10-16. N. Mount Diablo Thrust South M6.5 Earthquake Scenario ......................................................... 10-22 Figure 10-17. Estimated Number of Displaced Households Due to Earthquake ............................................... 10-24 Figure 10-18. Estimated Number of Persons Requiring Short-Term Shelter Due to Earthquake ...................... 10-24 Page 75 of 228