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Home My WebLink About5239 60 Ansel Hallet Rd Nitrogen Loading Calculation Received 05.20.26 Town of Yarmouth §207-11 Nitrogen Loading Calculation Project: 60 Ansel Hallet Road Use: Commercial / Industrial Establishment Wastewater Type: Domestic sink and toilet waste only Input Values Item Value Units Notes Employees 10 employees Proposed staffing Title V Flow Factor 15 gpd/employee Warehouse / Storage -type use Title V Sewage Flow 150 gpd 10 employees × 15 gpd/employee Effluent Nitrogen Concentration 25 ppm Domestic wastewater per Yarmouth §207- 11 Lawn Area 9,500 SF Parking lot islands/landscaped areas Lot Area 2.67 acres 116,207 SF ÷ 43,560 Calculation Methodology Step 1 – Wastewater Nitrogen Load 150 gpd × 25 ppm ÷ 328 = 11.43 Step 2 – Lawn Nitrogen Load 9,500 SF × 1.8 ÷ 1,000 = 17.10 Step 3 – Total Nitrogen Load 11.43 + 17.10 = 28.53 Step 4 – Final Nitrate Loading 28.53 × 0.275 ÷ 2.67 acres = 2.93 ppm Conclusion Based on the above calculation methodology from Town of Yarmouth §207-11, the proposed commercial / warehouse establishment results in an estimated nitrate loading of approximately 2.93 ppm, which is below the 5.0 ppm threshold.