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Tri-Valley Local Hazard Mitigation Plan; Volume 1—Planning-Area-Wide Elements <br />xx <br />Assemble, Adopt and Maintain the Plan <br />The planning team and Steering Committee assembled a document to meet federal hazard mitigation planning <br />requirements. A mitigation plan review crosswalk included in the hazard mitigation plan demonstrates its <br />compliance with all requirements. The planning partners formally adopted the plan once the State of California <br />Governor’s Office of Emergency Services and FEMA Region 9 granted pre-adoption approval. <br />The plan includes a schedule for monitoring and evaluating plan progress periodically and producing a revised <br />plan every five years. This maintenance strategy also includes processes for continuing public involvement and <br />integrating with other programs that can support or enhance hazard mitigation. <br />RISK ASSESSMENT <br />Risk assessment is the process of measuring the potential loss of life resulting from natural hazards, as well as <br />personal injury, economic injury and property damage. It is used to define the vulnerability of people, buildings, <br />and infrastructure to natural hazards. For this update, risk assessment models were enhanced with new data and <br />technologies. The Steering Committee used the risk assessment to rank risk and to gauge the potential impacts of <br />each hazard of concern in the Tri-Valley planning area. Specific hazard risk rankings for each planning partner are <br />detailed in Volume 2. The risk assessment included the following: <br /> Hazard identification and profiling <br /> Assessment of the impact of hazards on physical, social, and economic assets <br /> Identification of particular areas of vulnerability <br /> Estimates of the cost of potential damage. <br />Based on the risk assessment, hazards were ranked for the risk they pose to the overall planning area, as shown in <br />Figure ES-1. <br /> <br />Figure ES-1. Planning-Area-Wide Hazard Risk Rating <br />Earthquake <br />36 <br />Flood <br />18 <br />Landslide <br />18 <br />Severe Weather <br />33 <br />Dam Failure <br />12 <br />Drought <br />9 <br />Wildfire <br />12 <br />0 <br />1 <br />2 <br />3 <br />4 <br />012345678 <br />Values shown are risk rating. Larger circles indicate higher rating. <br />Highest <br />Risk <br />Medium <br />Risk <br />Lowest <br />Risk <br />Page 85 of 228