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r BOOK 99 PAGE k70 Existincr Demand Total Available Positive Roadway Existing Vested Segment Segment Project Concurrency Segment Volume Volume Demand Capacity Demand Determination 3330S 238 67 305 455 3 Y 3340N 48 39 87 513 3 Y 3340S 44 40 84 516 3 Y 4830E 141 45 186 694 10 Y 483OW 122 99 221 659 10 Y - Water A retail commercial use of 150,200 square feet on the subject property will have a water consumption rate of 45 Equivalent Residential units (ERU), or 11,250 gallons/day. This is based upon a level of service standard of 250 gallons/ERU/day. Water lines extend to the site from the South County Reverse Osmosis Plant which currently has a remaining capacity of approximately 2,000,000 gallons/day and therefore can accommodate the potable water demand associated with the proposed amendment. - Wastewater The subject property is serviced by the West Regional Wastewater Treatment Plant. Based upon the most intense use allowed under the proposed amendment, development of the property will have a wastewater generation rate of approximately 45 Equivalent Residential Units (ERU), or 11,250 gallons/day. This is based upon the level of service standard of 250 gallons/ERU/day. The West Regional Wastewater Treatment Plant currently has a remaining capacity of approximately 200,000 gallons/day and can accommodate the additional wastewater generated by the proposed amendment. - Solid Waste Solid waste service includes pick-up by private operators and disposal at the county landfill. For a 150,200 square foot commercial development on the subject site, solid waste generation will be approximately 751 waste generation units (WGU) annually. A WGU is a Waste Generation Unit measurement equivalent to one ton (2,000 pounds) of solid waste. Using the accepted conversion rate of one cubic yard for every 1,200 pounds of compacted solid waste generated, the 150,200 square feet of commercial development would be expected to generate 1,252 cubic yards of waste/year. A review of the solid waste capacity for the active segment of the county landfill indicates the availability of more than 850,000 cubic yards. The active segment of the landfill has a 2 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 proposed amendment. - 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 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 AE, 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 22.5 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 NOVEMBER 12, 1996 44