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On January 20, 2015, CDM Smith identified potential costs for the following options as shown <br /> below: <br /> Option Project Comments Additional Capital Costs Capital Cost per <br /> No Description Capacity mgd <br /> (mgd) <br /> 1 Reservoir— As outlined in CDM 5.02 $81,000,000 $16,135,458 <br /> Potable Smith Draft Report <br /> (December 2014) <br /> 2 Reservoir— As outlined in CDM 10.82 $104,000,000 $9,611,830 <br /> Ag and Smith Draft Report <br /> Potable (December 2014) <br /> 3 North Calculated based upon 7.91 $28,503,436 $3,603,469 <br /> County WTP physical production (Already <br /> Expansion capacity added expended in <br /> 2006) <br /> 4 North Estimated cost to 6.59 $750,000 $113,809 <br /> County WTP amend CUP to increase <br /> CUP capacity (physical <br /> Increase capacity already in <br /> place) <br /> The total project cost for Option No.1, Reservoir-potable is a staggering $81,000,000 which is a <br /> notable difference per million gallons of water produced when compared to Option No. 4. <br /> In addition to BCC's recommendation staff closely looked at Option No.4 due to a short term need <br /> and the excessive cost associated with the Reservoir option (Option No.1). The North County Reverse <br /> Osmosis Water Treatment Plant Expansion was constructed in 2006 and permitted to operate at <br /> 11.44 million gallons per day in 2012. The expansion included constructing additional vessels or <br /> skids, but currently at the maximum CUP capacity the plant is only operating at 50% (4 skids). <br /> Therefore,to address the underutilization of the North County RO plant and the near future needs of <br /> county residents, the most cost effective approach for the existing rate payers (Option No.4) is to <br /> utilize at least 75% of the vessels built as part of the expansion. This path is also in line with Policy <br /> 3.1 of the 2030 Comprehensive Plan. <br /> "POLICY 3.1:The County shall continue to use the Upper Floridan aquifer as the primary source of potable water <br /> and use reverse osmosis as the principal raw water treatment method for its regional potable water system. <br /> With that water source and treatment method, the county will provide its customers with good quality water <br /> that meets the requirements of the Federal Safe Drinking Water Act, Public Law 93-523; the Florida Safe <br /> Drinking Water Act,Section 403.850-403.864, FS;Chapter 381, FS;and Rules 62-550,40C-2,40C-3,17-22,and <br /> 64E-8, FAC." <br /> Page 3 of 4 <br /> F:\Utilities\UTILITY-Engineering\WATER\Alternative Water Supply\2014 Alternative Water Supply\Admin\Agenda-Alternative Water Supply 111 <br /> Evaluation-6-11-15.docx <br />