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4D 40 erosion control structure) to prevent the loss of major upland structures. Given the policy of the State of Florida regarding the construction of seawalls and revetments, and the extensive shoreline armoring along the Island, it is assumed that permission for construction of an erosion control structure will be given in the case of properties in jeopardy of loss to a 95 year return period storm event. Thus, the dollar amount of an anticipated erosion control structure is included in the total dollar benefit to the property. Thus, it is assumed that the owner will be allowed to construct a seawall or revetment, and the cost for construction and maintenance of this erosion control structure is added to the total benefit. It was assumed that oceanfront property owners with vacant land will "do nothing" in the absence of a project and the benefits to these properties are set equal to the dollar savings in land loss prevention. Given the state policies on shoreline armoring, it is extremely doubtful that a Coastal Construction Control Linc permit for shoreline armoring of vacant ,properties would be procured. In cases where the project benefits received by vacant properties without an erosion control structure exceeds the total land value, the benefits are set equal to the total property value. In effect this limits the expected erosion and storm losses if nothing is done and accounts for oceanfront properties that are Characterized by high erasion rates and locations where future land development is not probable. Properties that would not install an erosion control structure in the absence of the project include: vacant properties, where no building loss could be experienced, and the properties that are located sufficiently landward from the mean high water line.