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Indian River County Utilities <br />Concentrate Disposal Options <br />UAB Response: <br />The UAB decided against pursuit of this option in lieu of other potential options at the <br />May 4, 2000 meeting. <br />3.4 Stormwater Mixing <br />Concentrate may be diluted with stormwater for disposal. Mixing the concentrate <br />with stormwater would require that the stormwater system be available for <br />connection. Possible problems include retention volume, mixing ratio and reliability <br />of stormwater volumes. Since concentrate production is constant, a consistent supply <br />of stormwater would be required for diluting purposes. This option may be <br />advantageous during wet weather. <br />UAB Response: <br />The UAB recommended this option be pursued as an option once the Stormwater <br />Master planning efforts are underway. Further discussions with Indian River Farms <br />Water Control District are necessary. <br />3.5 Reuse Mixing <br />Mixing reuse water with concentrate and disposing the product through the reuse <br />water distribution system is another possible solution. The concentrate water would <br />have to be blended with reuse water at a ratio that would allow the water to be land <br />applied for irrigation purposes. Possible problems would include possible vegetation <br />intolerance to saltier water and the availability of reuse volume for dilution purposes. <br />Also the possible gradual buildup of salts in the areas of discharge may become a <br />problem. See Figure 1. <br />UAB Response: <br />The UAB believes this option in conjunction with other possible options will be the <br />most immediate and viable means of diverting; concentrate from the North County <br />plant and current discharge point. A pilot study ata nearby golf course pond is <br />recommended prior to full scale implementation. <br />3.6 Disposal to North VV VTP <br />The North County WWTP is a one million gallon per day wastewater treatment plant <br />See Figure 2. The concentrate could be diverted to the plant, mixed with the influent, <br />and treated and disposed as the North plant's effluent. The plant would only be able <br />to take a portion of the 600,000 gallons per day of concentrate produced at North <br />County facility. The rest of the concentrate would have to be disposed in another <br />manner. <br />UAB Response: <br />The UAB recommended not to pursue this option at the May 4 meeting since salts <br />pass through the treatment process. <br />CDM Camp LNtwr & stcx.e ins. <br />ro nl d 11116M <br />