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Consent Item 'A r <br />Indian River County, Florida <br />Department of Utility Services <br />Board Memorandum <br />Date: June 13, 2023 <br />To: Indian River County Board of County Commissioners <br />Through: John A. Titkanich, Jr., County Administrator <br />Sean C. Lieske, Director of Utility Services <br />From: Howard Richards, P.E., Manager, Capital Projects <br />Prepared By: Michael Loveday, Wastewater Superintendent <br />Subject: Budget Amendment for Online Phosphorus Analyzers <br />Background/Analysis: <br />Indian River County Department of Utility Services (IRCDUS) owns and operates the West Regional <br />Wastewater Treatment Facility (WRWWTF). Florida Statute, Section 403.086, requires facilities that <br />discharge into the Indian River Lagoon meet Advanced Waste Treatment (AWT) standards beginning July 1, <br />2025. AWT is defined as a nutrient reduction process that "contains not more, on a permitted annual average <br />basis, than the following concentrations": <br />1.Biochemical Oxygen Demand (CBODS) - 5mg/I <br />2.Suspended Solids - 5mg/I <br />3.Total Nitrogen, expressed as N - 3mg/I <br />4.Total Phosphorus, expressed as P - 1mg/I <br />In December of 2022, the Florida Department of Environmental Protection (FDEP) issued the WRWWTF a <br />new operating permit. As anticipated, the new permit required increased limitations on the <br />concentrations of the nutrients, nitrogen and phosphorus. In order to demonstrate the plant is able to <br />meet the reduction requirements, continuous online monitoring of the specified nutrients (nitrogen and <br />phosphorus) will be necessary. The WRWWTF currently has a continuous online monitoring analyzer for <br />nitrogen, but lacks an online analyzer for phosphorus. Upon request, IRCDUS received the attached <br />quotation from Hach Company, dated April 12, 2023, for two (2) continuous online phosphorus <br />monitoring analyzers in the amount of $78,570.35. In order to properly integrate the phosphorus <br />analyzers into the WRWWTF system and allow adequate time for process adaptation and system <br />troubleshooting, IRCDUS believe it is our best interest to add these analyzers to the facility operations <br />proactively by installing the analyzers as soon as possible. <br />281 <br />