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- Solid Waste Solid waste service includes pick-up by private operators and disposal at the county landfill. Solid waste generation by a 120 unit residential development on the subject site will be approximately 192 Waste Generation Units (WGU) or 364 cubic yards of solid waste/year. A WGU is a Waste Generation Unit measurement equivalent to 1.896 cubic yards of waste/year. According to the county's solid waste regulations, each residential unit generates 1.6 WGUs. With the county's adopted level of service standard of 2.37 cubic yards/person/year and the county's average of 2 persons/unit, each WGU is equivalent to 0.8 people (1.6/2 = 0.8) and 1.896 cubic yards of solid waste/year (0.8 X 2.37 = 1.896). To calculate the total cubic yards of solid waste for the most intense use allowed on the subject property under the proposed zoning district, staff utilized the following formula: Total number of WGUs X 0.8 X 2.37 (192 X 0.8 X 2.37 = 364 cubic yards/year). A review of the solid waste capacity for the active segment of the county landfill indicates the availability of more than 900,000 cubic yards. The active segment of the landfill has a 3 year capacity, and the landfill has expansion capacity beyond 2010. Based on staff analysis, it was determined that the county landfill can accommodate the additional solid waste generated by the site under the proposed zoning district. - Drainage All developments are reviewed for compliance with county stormwater regulations which require on-site retention, preservation of floodplain storage and minimum finished floor elevations. In addition, development proposals must meet the discharge requirements of the county Stormwater Management Ordinance. The 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 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 AE -22, 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 22 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 1,045,440 square feet, or 24 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 1,199,000 cubic feet. In order to maintain the county's adopted level of service, the applicant will be required to retain approximately 908,000 cubic feet of runoff on- site. With the soil characteristics of the subject property, it is 33 BOOK"� ®6 July 26, 1994