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r � � <br />Executive Summary - BROWN AND C A L D W E L L <br />WASTEWATER TREATMENT PLANT EXPANSION <br />Wastewater generated in the South Region is currently conveyed to the City of Vero Beach <br />WWTP where it is treated and disposed. Previous plans called for diversion of wastewater from <br />the City of Vero Beach WWTP to a proposed South Region WWTP to be located near Oslo <br />Road. With the purchase of the GDU system, it is recommended that wastewater flows be <br />diverted to the 0.85 MGD GDU WWTP and that the GDU WWTP be upgraded and expanded <br />as required to treat all South Region wastewater flows to reuse standards. This recommendation <br />is made based on the following factors: <br />• Additional Staff Requirements - If a second WWTP were constructed, the County <br />would have to add operators for 24-hour staffing of the new facility to meet <br />regulations for producing reuse level effluent. <br />• Operations and Maintenance Costs - Addition of a second facility would substantially <br />increase operations and maintenance costs. <br />• Regulatory Compliance - Compliance monitoring and reporting costs would double. <br />• Available Capacity - The GDU WWTP currently has about 400,000 gpd of available <br />capacity. This available capacity would allow diversion of wastewater flows from <br />the City of Vero Beach. Current wastewater treatment capacity allocations with the <br />City .of Vero Beach are not adequate to treat the additional 100,000 gpd of <br />wastewater flows expected from the Oslo Road area in the near future. The GDU <br />WWTP would provide the additional capacity required to meet these needs. <br />Three expansions have been identified to serve the growth within the expanded South <br />Region service area. The expansions are planned to provide additional capacity by the year 1995 <br />(1.15 MGD expansion -- total capacity 2.0 MGD), 2000 (1.0 MGD expansion -- total capacity <br />3.0 MGD), and 2003 (1.0 MGD expansion -- total capacity 4.0 MGD). The 1995 expansion is <br />planned to coincide with growth of the service area and adding additional service area. Vista <br />Royale and Vista Garden WWTPs are assumed to come off line in 1997. At this time flow will <br />be diverted to the*South Region WWTP located on the GDU site. <br />The estimated cost of the proposed expansions to the GDU South Region WWTP, through <br />the 2010 master planning period, are $10,800,000 as compared to expansion costs of $13,200,000 <br />for the previously proposed South Region WWTP as identified in the adopted Master Plan. By <br />the County using and expanding the GDU facility rather and building the proposed South <br />Regional WWTP north of Oslo Road the net reduction in capital cost is approximately <br />$2,400,000. <br />W.7763%RIP0R7jDcBCSUMM ES -5 <br />Novmba 1993 <br />41 <br />RooK <br />OV _ 2 199 <br />