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Vulnerability Assessment. Tropical storm/hurricane events can have the following potential impacts within a community: • Excessive wind; • Excessive water; • Soil/beach erosion; • Electric power outage; • Surface and air transportation disruption; • Navigable waterway impairment; • Potable water system loss or disruption; • Sewer system outage; • Telecommunications system outage; • Human health and safety; • Psychological hardship; • Economic disruption; • Disruption of community services; • Agricultural/fisheries damage; • Damage to critical environmental resources; • Damage to identified historical resources; • Fire; • Toxic releases; and • Stormwater drainage impairment. Hazus, a FEMA planning tool, estimates the amount of debris that will be generated by hurricanes. The model breaks the debris into four general categories: a) Brick/Wood, b) Reinforced Concrete/Steel, c) Eligible Tree Debris, and d) Other Tree Debris. This distinction is made because of the different types of material handling equipment required to handle the debris. The probabilistic model estimates that a total of 50,920 tons of debris will be generated. Of the total amount, 43,304 tons (83%) is Other Tree Debris. Of the remaining 8,616 tons, Brick/Wood comprises 42% of the total, Reinforced Concrete/Steel comprises 0% of the total, with the remainder being Eligible Tree Debris. If the building debris tonnage is converted to an estimated number of truckloads, it will require 143 truckloads (@25 tons/truck) to remove the building debris generated by the hurricane. The number of eligible tree debris truckloads will depend on how the 5,037 tons of eligible tree debris are collected and processed. The volume of tree debris Indian River County Comprehensive Emergency Management Plan Basic Page 28