Guam Hazard Mitigation Plan - Western States Seismic Policy Council

SECTIONFIVERisk AssessmentType of IncidentTable 5-10 Oil and Chemical Spills, 2000–2010Number of ReportedIncidents Medium Affected Material NameAircraft 12 Land, water, nonrelease Jet fuel and various types of oilFixed 62Mobile 34Pipeline 22Air, land, other, soil andwaterLand, subsurface, waterand otherLand, soil, subsurface,water and otherAnhydrous ammonia, charcoal,chlorine, diesel, hydraulic fuel,jet fuel, polychlorinatedbiphenyls, radioactive material,total petroleum hydrocarbon, andvarious types of oilDiesel, gasoline, iodine,radioactive material and varioustypes of oilDiesel, jet fuel and various typesof oilPlatform 1 Water Mobile oilStorage Tank 43Air, water, land, other,nonrelease and unknownUnknown Sheen 268 WaterVessel 217Source: National Response Center 2011.Air, Water, nonrelease,other, unknownAnhydrous ammonia, diesel,gasoline, jet fuel, kerosene,refrigerated liquid oxygen,sodium hypochlorite, sulfuricacid and various types of oilDiesel, gasoline and varioustypes of oilAmmonia, calcium hypochloritesolution, copper concentrate,diesel, gasoline, jet fuel,phosphoric acid, R-12, andvarious types of oilProbability of Future EventsNo comprehensive information is available on the probability of future HAZMAT events acrossall types of sources (i.e., fixed facilities and transport vehicles). Wide variations in thecharacteristics of each HAZMAT and between the materials themselves make such an evaluationdifficult.5.3.7 High SurfNatureOcean swells, rough seas, and surf are caused by the fetch of the wind, that is, the area overwhich a strong wind blows. Swells become fully developed after the wind blows over a sufficientfetch length (roughly greater than 500 miles) for about 24 to 36 hours. Generally, islands in thewestern Pacific Ocean receive large ocean swells and high surf from the fetch of the wind ofnearby tropical cyclones, monsoon surges, and/or distant tropical cyclones. These waves can beover 30 feet in height. On islands surrounded by reefs, high surf hazards are often coupled withextremely strong rip current hazards as seawater rapidly flows through the channels and breakson the reefs.5-31