Guam Hazard Mitigation Plan - Western States Seismic Policy Council

SECTIONFIVERisk AssessmentTable 5-21Summary All-Hazard Vulnerability and Potential Loss Results for Guam: ProportionEssential Facilities, Major Utilities, and Transportation Systems (EFMUTS)Area Affected PopulationEssential Facilities Major Utilities Transportation Systems – FacilitiesGBSHazard*% of% of% of% of% of% of% of% of% of% ofSubhazard Hazard Zone Square MilesNo.No.Value ($)No.Value ($)No.Value ($)No.Value ($)Total Potential 99.5699.48 98.03 99.72 99.72 99.86 85.71 98.32 99.71 99.77Fault Proximity 21.86 16.44 20.00 18.64 22.93 20.02 32.33 11.56 15.94 18.05EarthquakeLiquefactionVery High 0.24 0.11 4.23 1.51 0.55 14.95 4.51 49.71 0.51 0.78High 1.19 0.54 3.10 6.79 3.04 8.17 9.77 10.27 0.95 1.02Flooding 100-year floodplain 4.96 4.12 21.41 14.86 7.46 5.19 30.08 68.24 5.45 6.50HazardousMaterialsNPDES-AirPermitNPDES-WaterPermitAir Pathway 14.00 32.69 40.00 25.08 27.35 57.00 43.61 11.94 30.81 36.45Water Pathway 14.60 11.78 30.14 21.05 20.72 47.06 43.61 81.21 34.09 30.89Hardfill Sites Air Pathway 10.64 17.12 20.85 6.26 13.26 6.52 23.31 6.04 21.02 16.84Pre-CERCLISFacilitiesAir, Water,Unknown66.54 75.51 84.79 94.07 69.34 79.92 93.23 96.29 75.38 57.67Severe Wind Extreme 55.22 45.24 36.90 57.55 59.94 59.57 39.10 76.95 46.57 23.46Slope FailureLandslideVeryHigh22.23 4.82 3.66 1.00 4.97 7.22 12.03 2.58 1.50 1.23High 4.26 1.76 5.07 0.91 9.67 7.76 5.26 1.96 2.81 1.48TsunamiWater Level at16 feet aboveMSL5.60 4.92 26.20 19.13 12.71 31.91 39.10 78.53 8.16 9.08Wildland FireVery High 39.40 22.24 10.14 11.37 24.86 16.18 24.81 5.49 19.84 15.94High 39.22 35.27 30.70 28.44 41.16 35.88 30.08 5.24 34.09 30.89* Due to a combination of a lack of adequate information 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 the following hazards: coastal erosion; disease; drought; stormwaterflooding; 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 potential loss results have not been prepared for tropical cyclone, the following keysubhazards caused by tropical cyclone are included: flooding and severe wind. In addition, a quantitative vulnerability analysis has not been prepared for HAZMAT sewage discharge because the sewage is discharged directly into the ocean and therefore does not affect the assets and population onland.5-62