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PBSI <br /> June 3 , 2005 <br /> Mr. Mike Hotchkiss <br /> Indian River County <br /> 184025 th St , <br /> Vero Beach , FI 32960 <br /> RE : Expansion of the West & North Regional WWTFs <br /> Indian River County ( IRC) has experienced a significant increase in the amount of new <br /> development applications recently . The annual and monthly total number of <br /> construction permits issued has also increased over the last few years since the 2003 <br /> Utilities Master Plan historical cut off date and the completion of the report in 2004 . As <br /> a result of this increased planned growth , the Department of Utility Services is <br /> experiencing larger amounts of vested flows and has seen the actual plant flow increase <br /> at all the Regional Wastewater Treatment Facilities (WWTF) . <br /> West Regional WWTF <br /> The West Regional Wastewater Treatment Facility was designed as a 2 . 0 MGD annual <br /> average daily flow (AADF) biological nutrient removal , advanced treatment plant. The <br /> facility produces an effluent suitable for reclaimed water reuse as unrestricted public <br /> access irrigation with alternate wet weather disposal to a 135-acre man-made wetland <br /> treatment system adjacent to the plant site , which is located near 1 -95 between 8th <br /> Street and 4th Street. The wetland is configured to receive flow from both the West and <br /> South Regional WWTFs . <br /> The current AADF at the West Regional WWTF and South Regional WWTF are 0 . 97 <br /> MGD and 1 . 5 MGD , respectively, as compared to current permitted capacities of 2 . 0 <br /> MGD AADF each . However, the West Regional facility has reached a three-month <br /> average daily flow (ADF) plus vested flow of 1 . 20 MGD , or approximately 60 percent of <br /> the permitted AADF capacity. Likewise , the South Regional WWTF has reached a <br /> three-month ADF plus vested flow of approximately 1 . 9 MGD , or approximately 95 <br /> percent of the permitted AADF capacity of the facility. <br /> The 2004 Master Plan Update ( MP) recommended that approximately 0 . 75 MGD AADF <br /> of flow be diverted from the South to the West Regional WWTF to account for vested <br /> flow and the growth in the planning horizon while maintaining the County' s goal not to <br /> expand the South Regional WWTF , The MP utilized vested flows of 0 . 20 and 0 . 35 <br /> MGD AADF for the West and South Regional WWTFs , respectively, which are similar to <br />