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December 19, 2019 <br />Mark Justice <br />Vice President <br />Construction and Development <br />Windsor <br />3125 Windsor Boulevard <br />Vero Beach, Florida 32963 <br />RE: Reclaimed Water Feasibility Study <br />Dear Mark: <br />Per your request, BGE, Inc. (BGE) has prepared the following analysis to supplement the CUP renewal <br />application submitted to the St. Johns River Water Management District (SJRWMD). Specifically, <br />the economic and environmental feasibility of adding reclaimed water high in Phosphorus and <br />Nitrogen to the existing wet detention ponds located on Windsor property. <br />ENVIRONMENTAL FEASIBILITY <br />The Windsor development is a low-density single-family residential development located on the barrier <br />island in Indian River County. Stormwater runoff from the development currently outfalls to the Indian <br />River Lagoon, which has been classified as impaired waters by FDEP and is included in the Central <br />Indian River Lagoon Basin Management Action Plan. The Windsor development was permitted in <br />1990 (permit # 18758-1) prior to SJRWMD requiring analysis of nutrient loading. To establish a <br />baseline for comparison, the Total Maximum Daily Load (TMDL) for Nitrogen and Phosphorus were <br />calculated. Using the development parameters from the ERP on file with SJRWMD, a TMDL analysis <br />for Nitrogen and Phosphorus using data from the Harvey Harper report was completed and the results <br />are summarized below. <br />Windsor 412 -acre <br />Development <br />Existing <br />After Removal in Wet <br />Detention Ponds* <br />kg/yr <br />kg/yr <br />Total Nitrogen (TN) <br />1250 <br />750 <br />Total Phosphorus (TP) <br />197 <br />79 <br />*The existing wet detention ponds remove 40% of the total Nitrogen and 60% of the total Phosphorus. <br />Serving. Leading. Solving.`" <br />BGE, Inc. • 1515 Indian River Boulevard, Suite A245 • Vero Beach, Florida 32960 • www.bgeinc.com <br />73 <br />