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<br /> Hazard Mitigation Plan | 2022 <br />Risk Assessment <br />- 39 - <br /> <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B1b. <br />Q: Does the plan provide rationale for the omission of any natural hazards that are commonly recognized <br />to affect the jurisdiction(s) in the planning area? (Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B1c. <br />Q: Does the plan include a description of the location for all natural hazards that can affect each <br />jurisdiction? (Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B1d. <br />Q: Does the plan include a description of the extent for all natural hazards that can affect each <br />jurisdiction? (Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B1e. <br />Q: Does the plan include a description of the extent for all natural hazards that can affect each <br />jurisdiction? (Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B2a. <br />Q: Does the plan include information on previous occurrences of hazard events for each jurisdiction? <br />(Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B2b. <br />Q: Does the plan include information on the probability of future hazard events for each jurisdiction? <br />(Requirement §201.6(c)(2)(i)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B3b. <br />Q: Is there a description of each identified hazard’s overall vulnerability (structures, systems, populations, <br />or other community assets defined by the community that are identified as being susceptible to damage <br />and loss from hazard events) for each jurisdiction? (Requirement §201.6(c)(2)(ii)) <br />A: See Table: Vulnerability: Location, Extent, and Probability for the City below. <br /> <br />Table: Vulnerability: Location, Extent, and Probability for the City of Santa Ana <br />Hazard <br />Location (Where) Extent <br />(How Big an Event) <br />Probability <br />(How Often) * <br />Previous Occurrences <br />Earthquake (San <br />Andreas Fault <br />M7.9) <br />Entire City The Southern California Earthquake <br />Center (SCEC) in 2007 concluded <br />that there is a 99.7 % probability <br />that an earthquake of M6.7 or <br />greater will hit California within 30 <br />years.1 <br />Likely March 10, 1933: Long <br />Beach earthquake, <br />caused substantial <br />structural damage on <br />4th street. <br />Flood <br />City facilities located <br />within 100-Year and <br />500-Year flood zones, <br />as well as Northern <br />border of the City and <br />along the Santa Ana <br />100-Year and 500-Year Flood Zone <br />areas subject to inundation, <br />flooding, and flash flooding. <br />Likely December 6, 2018: <br />rainfall at a rate of 1 <br />inch per hour, flash <br />flooding across the <br />entire region.