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Federal Emergency Management Agency ' s Flood Insurance Rate Map, or as defined in a more detailed study report. " Additionally , section 930.07 ( 2 ) of the county ' s LDRs requires that all residential development shall have the lowest floor ( including basement) elevated to six inches or more above the base flood level . Since the subject property lies within Flood Zone AE- 9 . which is a special flood hazard area located within the 100- year floodplain , any development on this property must have a minimum finished floor elevation of no less than 9 .5 feet above mean sea level . Besides the minimum elevation requirement, on -site retention and discharge standards also apply to this request . With the most intense use of this site , the maximum area of impervious surface under the proposed zoning. classification will be approximately 6 . 4 acres . The estimated runoff volume . based on that amount of impervious surface and the 25 year/24 hour design storm, will be approximately 296 . 729 cubic feet. In order to maintain the county ' s adopted level of service , the applicant will be required to retain approximately 56 . 873 cubic feet of runoff on - site . With the soil characteristics of the subject property , it is estimated that the pre -development runoff rate is 43 . 48 cubic feet/second . Based upon staffs analysis , the drainage level of service standards will be met by limiting off- site discharge to its pre -development rate of 43 . 48 cubic feet/second. requiring retention of 56. 873 cubic feet of runoff for the most intense use of the property , and requiring that all finished floor elevations exceed 9 . 5 feet above mean sea level . As with all development, a more detailed review will be conducted during the development approval process . ` Recreation A review of county recreation facilities and the projected demand that would result from the most intense development that could occur on the subject property under the proposed zoning district indicates that the adopted level of service would be maintained . The following table illustrates the additional park demand associated with the proposed development of the property and the existing surplus park acreage . PARK INFORMATION LOS ( Acres per 1 . 000 Population ) Project Demand ( Acres ) Surplus Park Acreage 4 . 0 0 . 58 1 . 164 Concurrence Summare Based upon the analysis conducted , staff has determined that all concurrency - mandated facilities . including drainage , roads . solid waste , recreation, water, and wastewater, have adequate capacity to accommodate the most intense use of the subject property under the proposed zoning district . Therefore . the concurrency test has been satisfied for the subject request. Consistency with Comprehensive Plan Rezoning requests are reviewed for consistency with all policies of the comprehensive plan . Rezoning requests must also be consistent with the overall designation of land uses as depicted on the Future Land Use Map, which includes agricultural , residential , recreational , conservation , and commercial and industrial land uses and their densities . Commercial and industrial land uses are located in nodes throughout the unincorporated areas of Indian River County . June 12 , 2001 10