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Comprehensive Plan Coastal Management Element <br />TABLE 9.14 <br />SAFFIR-SIMPSON HURRICANE SCALE <br />Category III Winds of 111 to 130 MPH. <br />Evacuation routes cut off by rising water three (3) to four (4) hours before <br />landfall. Mobile homes destroyed; some structural damage to small <br />buildings (inland); severe damage on the coast. <br />Category IV Winds of 131 to 155 MPH. <br />Evacuation routes cut off by rising water three (3) to five (5) hours before <br />landfall. Major damage to lower floors of buildings near shore. Etensive <br />damage to windows, doors and roofing material. <br />Category V Winds in excess of 155 MPH. <br />Evacuation routes cut off by rising water thre (3) to five (5) hours before <br />landfall. Small structures destroyed: extensive damage to windows and <br />doors; and, collapse of roofs on most residential and industrial buildings. <br />• Coastal High Hazard Area <br />The coastal high -hazard area is the area below the elevation of the category 1 storm surge <br />line as established by a Sea, Lake, and Overland Surges for Hurricanes (SLOSH) <br />computerized storm surge model. <br />Within the CHHA, there are several large tracts of land in the unincorporated County that <br />consist of environmentally -sensitive estuarine wetlands. In the unincorporated area, those <br />lands, located along both sides of the IRL, are designated "C-2" on the future land use <br />map. 'C-2" designated lands may be developed at one (1) unit per 40 acres or used for a <br />density transfer of one (1) unit per acre to an upland site. <br />Most of the land in the unincorporated County within the CHHA consists of residential <br />land with development potential and permitted densities ranging from three (3) to ten (1 <br />0) units per acre. A substantial portion of this land is currently developed. Much of that <br />development took place at a time when the CHHA was more narrowly defined as land on <br />the barrier island, east of the Coastal Construction Control Line (CCCL). <br />In the unincorporated area, the CHHA also contains a small portion of the commercially <br />designated land in three (3) areas. Those areas within the CHHA are: the Medical Node <br />Appendix A <br />