2010-252A (19) - Laserfiche WebLink

Home Browse Search

Comprehensive Plan Potable Water Sub-Element Community Development Department Indian River County 25 Alternative Water Supply Implementation Schedule As indicated in the Table below, it will take a number of years to implement any of the water supply alternatives. In the table, the lower number of years represents the best case scenario, with the assumption that the necessary permits would be processed routinely and that controversy or objections would not delay the project. The higher number of years represents the time that would be required to address potential permitting delays. The potential delaying activities that could occur are shown in the referenced table. As indicated, the interim expanded use of the UFA is the alternative that would require the least number of years to implement. Table 3.B.8 Schedule for Implementation of Alternative Water Supplies Surficial aquifer Seawater Desalination Fresh Surface Water/Reservoirs Interim Expanded Use of UFA Number of Years to Implement from 6 to 8 6 to 10 6 to 10 2 to 4 Authorization Potential • Resolution of •404 permitting •SJRWMD’s • Resolution of delaying factors drawdown for crossing of determination of the drawdown impacts on wells the Indian River safe yield of selected impacts on of adjacent home Lagoon water storage areas nearby owners •Feasibility •Availability of water agricultural wells • Groundwater study for use of from the St. Johns quality protection the Boulder River due to • Acquisition of Zone as a minimum flows and 1 large number of well sites source of water levels restrictions Alternative Water Supply Costs In the table below, the cost estimates for each of the three different alternative water supply sources are presented. For comparison purposes, the cost of constructing new water treatment plants and developing new UFA wellfields is also presented. No land acquisition costs are included in any of the cost estimates. In the case of seawater desalination, only the treatment cost is included. The cost of an influent pipeline extending to the ocean is not included because of significant uncertainties associated with this determination. For the various potable water treatment technologies, treatment processes, and plant components, the estimates include capital, operation and maintenance (O&M), and total production costs. As shown, the cost estimates are provided for plant capacity increments of 5, 10, 15, and 20 million gallons per day (mgd) on a maximum day demand (MDD) basis. The table below presents a summary of the total production costs for each technology, including the annualized capital costs, the annual O&M costs