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INDIAN RIVER COUNTY, FLORIDA DEPARTMENT OF UTILITY SERVICES Date: March 18, 2019 To: Jason E. Brown, County Administrator From: Vincent Burke, P.E., Director of Utility Services Subject: 286 +/- acre Purchase and Sale Agreement DESCRIPTIONS AND CONDITIONS: The West Regional Wastewater Treatment Facility (WRWWTF) is currently operating under Florida Department of Environmental Protection (FDEP) permit FL0041637. The existing plant is currently rated at 6.0 million gallons per day (MGD) annual average daily flow (AADF) permitted capacity. Adjacent to the WRWWTF is an existing 4.0 MGD AADF discharge from the plant to the created wetland. The Wetland Treatment System (WTS) is sized at 169 acres +/- with wetted area totaling approximately 135 +/- acres consisting of one deep settling pond, nine deep marsh flow through cells and three shallow marsh cells with a final storage outfall cell at the southwest corner of the site into the Lateral D canal near 1-95. Under routine operating conditions, the Indian River County Department of Utility Services (IRCDUS) receives and treats the domestic wastewater using advanced treatment capabilities in order to separate the solids and further process the liquids and to then create reclaimed or reuse water. For most of the year, IRCDUS supplies multiple golf course locations this irrigation quality reuse water in lieu of those locations using groundwater. During times of heavy influent flows or when there is unusually high precipitation, the WRWWTF must still treat the wastes it receives and send the reclaimed water out to the system. As receiving ponds fill up, the only option is for the reclaimed water to be sent to the WTS where additional biological treatment occurs. When that scenario occurs, there is a possibility for permitted discharge to the Lateral D canal to start. During those intermittent discharges, the FDEP permit requires that certain parameters must be met for water quality and quantity, and that nutrient levels must be tracked. The current WRWWTF FDEP permit is issued under the federal program for the Environmental Protection Agency's (EPA) National Point -Source Discharge Elimination System (NPDES). The Total Maximum Daily Load (TMDL) for the facility, in concert with the Basin Action Management Plan (EMAP) for this area, is structured in order to comply with the EPA's mandate and has very restrictive Waste Load Allocations (WLA) tied to the WRWWTF for Total Nitrogen (TN) and Total Phosphorus (TP). The FDEP permit and associated WLAs restrict the way IRCDUS is able to operate the WTS in attempting to stay at or below the WLA. Thus, IRCDUS is seeking alternative wet weather reclaimed water storage/disposal options for the WRWWTF. This need is especially critical since the County has been experiencing tremendous growth as well. IRCDUS has processed an average of 125 new meter installs each month for the past 18 months, and this growth Page 1 of 5 C:\G ra nicus\Legista r5\L5\Temp\614baa 68-ed37-49d2-b48c-97d5d6a5626c.docx