Guam Hazard Mitigation Plan - Western States Seismic Policy Council

SECTIONFIVERisk Assessmentand the GBS from the 2008 Guam HMP to the 2011 Guam HMP is discussed in Section 5.5.3(Vulnerability and Potential Loss Results).DMA 2000 REQUIREMENTS – RISK ASSESSMENT – ESTIMATING POTENTIAL LOSSESEstimating Potential LossesRequirement § 201.4(c)(2)(iii): [The State risk assessment shall include an] overview and analysis of potentiallosses to the identified vulnerable structures, based on estimates provided in local risk assessments as well as theState risk assessment. The State shall estimate the potential dollar losses to State owned or operated buildings,infrastructure, and critical facilities located in the identified hazard areas.DMA 2000 Requirements – Risk Assessment – Estimating Potential Losses by JurisdictionElementA. Does the new or updated plan present an overview and analysis of the potential losses to the identifiedvulnerable structures?B. Are the potential losses based on estimates provided in local risk assessments as well as the State riskassessment?C. Does the updated plan reflect the effects of changes in development on loss estimates?DMA 2000 REQUIREMENTS – RISK ASSESSMENT – ASSESSING LOSSES OF STATE FACILITIESElementA. Does the new or updated plan present an estimate of the potential dollar losses to State owned or operatedbuildings, infrastructure, and critical facilities in the identified hazard areas?Source: FEMA 2008.Potential dollar losses refer to the possible value in dollars that could be lost due to a hazardevent. The potential loss value is based on the exposure of the EFMUTS and GBS within ahazard area. This loss value does not include the value of contents, the costs associated with lossof function, or the costs of displacement or temporary quarters. Potential dollar losses to theEFMUTS and GBS are summarized in Tables 5-20 and 5-21 and listed by village inAppendix F (Vulnerability and Potential Loss Results by Village).5.5.1 Methodology and LimitationsHazards United States – Multi-Hazard (HAZUS-MH) is FEMA’s recommended risk assessmentsoftware program for earthquakes, flooding, and severe winds. However, as of this planningupdate, HAZUS-MH is not available for Guam. Without HAZUS-MH, the vulnerability analysisfor Guam is much more difficult and, in some ways, less precise as will be possible usingHAZUS-MH.In the absence of HAZUS-MH, vulnerability analysis and loss estimates for Guam wereconducted using a quantitative analysis. A quantitative vulnerability analysis uses detailedinformation on hazard location, probability/magnitude (where possible), and asset information,such as location, characteristics, and value. A quantitative analysis was conducted for seismichazards (faults, liquefaction), flooding, HAZMAT, severe wind, slope failure (landslide),tsunami, and wildland fire. Tropical cyclone was analyzed through the analysis of the keysubhazards associated with tropical cyclone, including flooding and severe wind. In addition,exposure analyses were conducted for the quantitatively analyzed hazards. This analysis wasconducted by overlaying the hazard areas identified in Section 5.3 (Hazard Profiles) on top of the5-56