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Windsor (Reclaimed Water) <br />Nutrient Loading Analysis <br />Existing Development <br />TN concentration = <br />TP concentration = <br />2.07 mg/L <br />0.327 mg/L <br />Land Use = <br />Single Family <br />Pervious (Non-DCIA) CN = <br />39 <br />Site Area (A) (acres)= <br />412 <br />Hydrologic Soil Group = <br />A <br />Meteorological Zone (Indian River Cnty) <br />Zone 2 <br />Impervious Area % = <br />29.8% <br />Annual Rainfall Rate (in/year of rainfall) <br />54 <br />Determine the annual runoff coefficient using Appendix C (FDEP Stormwater Treatment Report) <br />c = 0.264 <br />Calculate Annual Runoff Volume (V) <br />V= c x A x rainfall x 1ft/12in <br />V = 0.264 x 412 x 54 x 1ft/12in <br />V = 489.46 ac-ft/yr <br />Calculate Total Nitrogen Loading (TN) <br />TN = V x TN concent. mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TN = 489.46 x 2.07 mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TN = 1249.51 kg/yr <br />Calculate Total Phophorus Loading (TP) <br />TP = V x TP concent. mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TP = 489.46 x 0.327 mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TP = 197.39 kg/yr <br />Adding Reclaimed Water <br />Weekly Average Concentration Levels in Reclaimed Water <br />TN concentration = 2.18 mg/L <br />TP concentration = 1.4 mg/L <br />Approximate Reclaimed Water Volume Usage (V) <br />If reclaimed water will replace the groundwater from the Floridan Aquifer, the total yearly allocation <br />of groundwater will be assumed for reclaimed volume (58.4 MGY) <br />Approximate Volume of reclaimed water per year = 179.2 ac -ft <br />Calculate Total Nitrogen Loading (TN) <br />TN = V x TN concent. mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TN = 179.20 x 2.18 mg/L x 43560cf/ac x 7.48ga1/cfx3.79L/galxlkg/106mg <br />TN = 481.78 kg/yr <br />Windsor -Reclaimed Water.xlsx/Nutrient Loading Analysis <br />76 <br />12/19/2019 <br />