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Guam Hazard Mitigation Plan - Western States Seismic Policy Council

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SECTIONFIVERisk AssessmentTable 5-18Potential of Exposure to Most-Significant <strong>Hazard</strong>s on <strong>Guam</strong> by EFMUTS<strong>Hazard</strong><strong>Hazard</strong> Area% of EFMUTS Exposed in <strong>Hazard</strong>AreaEarthquake – Fault Proximity 984 feet 23.18Earthquake – Liquefaction High or very high 6.82Flooding(key subhazard of tropical cyclone)100-year floodplain 16.82HAZMAT – NPDES Air Permit 1-mile radius 35.18HAZMAT – NPDES Water Permit 1-mile radius 28.24HAZMAT – Pre-CERCLIS Facilities 1-mile radius 79.53HAZMAT – Hardfill Sites 1-mile radius 18.00Severe Wind (key subhazard of Severe wind areas 47.06Slope Failure – Landslide Very high or high 12.59Tsunami 16 feet above mean sea level 22.47Wildland fire Very high or high 53.76Table 5-19Potential of Exposure to Most-Significant <strong>Hazard</strong>s on <strong>Guam</strong> by GBS<strong>Hazard</strong> <strong>Hazard</strong> Area % of GBS Exposed in <strong>Hazard</strong> AreaEarthquake – Fault Proximity 984 feet 15.94Earthquake – Liquefaction High or very high 1.46Flooding(key subhazard of tropical cyclone)100-year floodplain 5.45HAZMAT – NPDES Air Permit 1-mile radius 30.8HAZMAT – NPDES Water Permit 1-mile radius 34.09HAZMAT – Pre-CERCLIS Facilities 1-mile radius 75.38HAZMAT – Hardfill Sites 1-mile radius 21.02Severe Wind (key subhazard of Severe wind areas 46.57Slope Failure – Landslide Very high or high 4.31Tsunami 16 feet above mean sea level 8.16Wildland fire Very high or high 53.935.5.3 Vulnerability and Potential Loss ResultsThe overall results for a vulnerability analysis for land use area, population, EFMUTS and theGBS are summarized in Tables 5-20 and 5-21 and listed by village in Appendix F(Vulnerability and Potential Loss Results by Village). Due to a combination of a lack of adequateinformation and the lack of a standard methodology for a quantitative vulnerability analysis,vulnerability and potential loss results have not been prepared for Tables 5-20 and 5-21 for thefollowing hazards: coastal erosion; disease; drought; stormwater flooding; high surf; lightning;non-seismic ground failure; salt spray; slope failure (mudslide and post fire debris flow);terrorism; and transportation accident (aviation and port). Although vulnerability and potentialloss results have not been prepared for tropical cyclone, the following key subhazards caused bytropical cyclone are included: flooding and severe wind. In addition, a quantitative vulnerability5-58

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