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subject property is located within the M-1 Drainage Basin and the <br />Indian River Farms Water Control District (IRFWCD). Since the site <br />is located within the IRFWCD, development on the property will be <br />prohibited from discharging any runoff in excess of two inches in <br />a 24 hour period, which is the approved IRFWCD discharge rate. <br />Additionally, because the northern fringe of the property lies <br />within a floodplain, the minimum floor elevation level of service <br />standard applies to that area. Consistent with Drainage Policy <br />1.2, "all new buildings shall have the lowest habitable floor <br />elevation no lower than six inches above the elevation of the 100 - <br />year flood elevation as shown on the Federal Emergency Management <br />Agency's Flood Insurance Rate Map, or as defined in a more detailed <br />study report." Since the northern fringe of the subject property <br />lies within Flood Zone A, which is a special flood hazard area <br />located within the 100 -year floodplain, any development within that <br />area must have a minimum finished floor elevation of no less than <br />23.6 feet above mean sea level, or 18 inches above the crown of the <br />adjacent roadway, whichever is higher. <br />Besides the minimum elevation requirement, on-site retention and <br />discharge standards also apply to this request. With the most <br />intense use of this site under the proposed zoning, the maximum <br />area of impervious surface will be approximately 533,610 square <br />feet, or 12.25 acres. The maximum runoff volume, based on that <br />amount of impervious surface and the 25 year/24 hour design storm, <br />and given the IRFWCD two inch discharge requirement, will be <br />approximately 528,095 cubic feet. In order to maintain the <br />county's adopted level of service, the applicant will be required <br />to retain approximately 400,843 cubic feet of runoff on-site. <br />Considering the soils characteristic of the subject property, staff <br />estimates that the pre -development runoff rate is 84 cubic <br />feet/second. <br />Based upon staff's analysis, the drainage level of service <br />standards will be met by limiting off-site discharge to the <br />IRFWCD's maximum discharge rate of two inches in 24 hours, and <br />requiring retention of 400,843 cubic feet of runoff for the most <br />intense use of the property. <br />As with all development, a more detailed review will be conducted <br />during the development approval process. <br />- Recreation <br />A review of county recreation facilities and the projected demand <br />that would result from the most intense development that could <br />occur on the property under the proposed zoning classification <br />indicates that the adopted levels of service would be maintained. <br />The table below illustrates the additional park demand associated <br />with the proposed development of the property and the existing <br />surplus acreage by park type. <br />Park Type <br />Urban District <br />Community (south) <br />Beach <br />River <br />LOS <br />(Acres per <br />1000 population) <br />5.0 <br />1.25 <br />1.5 <br />1.5 <br />Project <br />Demand Surplus <br />1.61 <br />161.397 <br />0.40 <br />4.487 <br />0.48 <br />58.822 <br />0.48 <br />19.819 <br />Based upon the analysis conducted, staff has determined that all <br />concurrency -mandated facilities, including drainage, roads, solid <br />waste, recreation, water, and wastewater have adequate capacity to <br />accommodate the most intense use of the subject property under the <br />proposed zoning. Therefore, the concurrency test has been <br />satisfied for the subject request. <br />41 <br />660K 102 PAGE 264 <br />August 12, 1997 <br />