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BOOK 100 FAGE971 subject property is located within the M-1 Drainage Basin. Since the site is located within the Indian River Farms Water Control District (IRFWCD), development on the property will be prohibited from discharging any runoff in excess of two inches in a twenty- four hour period, which is the approved IRFWCD discharge rate. In this case, the minimum floor elevation level of service standard applies, since the property lies within a floodplain. Consistent with Drainage Policy 1.2, "all new buildings shall have the lowest habitable floor elevation no lower than six inches above the elevation of the 100 -year flood elevation as shown on the Federal Emergency Management Agency's Flood Insurance Rate Map, or as defined in a more detailed study report." Since the subject property lies within Flood Zone A, 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 25.7 feet above mean sea level, or 18 inches above the crown of the adjacent roadway, whichever is higher. 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 3,769,247 square feet, or 86.53 acres. The maximum runoff volume, based on that amount of impervious surface and the 25 year/24 hour design storm, and given the IRFWCD two inch discharge requirement, will be approximately 3,274,475 cubic feet. In order to maintain the county's adopted level of service, the applicant will be required to retain approximately 2,535,003 cubic feet of runoff on- site. With the soil characteristics of the subject property, the estimated pre -development runoff rate is 824.1 cubic feet/second. Based upon staff's analysis,-- the drainage level of service standards will be met by limiting off-site discharge to the IRFWCD's maximum discharge rate of two inches in twenty-four hours, requiring retention of the 2,535,003 cubic feet of runoff for the most intense use of the property, and requiring that all finished floor elevations exceed 25.7 feet above mean sea level, or 18 inches above the crown of the adjacent roadway, whichever is higher. As with all development, a more detailed review will be conducted during the development approval process. - Recreation Recreation concurrency requirements apply only to residential development. Therefore, this comprehensive plan amendment request would not be required to satisfy recreation concurrency requirements. Based on the analysis conducted, staff has determined that all concurrency -mandated facilities, including drainage, roads, solid waste, water, and wastewater have adequate capacity to accommodate an industrial park on Subject Property 1. Comoatibility with the Surrounding Area - Subject Property 1 The proposed amendment will not increase potential incompatibilities associated with development of Subject Property I. Since this property abuts commercial/ industrial designated land to the southeast, the proposed redesignation would result in a continuation of an existing land use designation pattern. The primary impacts of industrial development on Subject Property 1 would be on the Vero Tropical Garden subdivision along the east side of 98th Avenue. Despite being platted in 1960, this subdivision remains largely undeveloped. There are also several factors that indicate that industrial development on Subject Property 1 would not be incompatible with residential development in the Vero Tropical Garden subdivision. In contrast to the properties to the north and west of Subject Property 1, the Vero Tropical Garden properties are relatively small in size and, therefore,. do not have the option of providing additional buffering. They do, however, have the advantage of an additional 100 feet of separation due to canal and road right-of- way. LDR provisions that would work to mitigate potential impacts on these properties from industrial development on Subject Property MARCH 189 1997 98