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• <br /> 068 5 <br /> Hydraulic Loading: <br /> 360 gal/day x 365 days/year = 131,400 gal/year <br /> This can be assimilated at a rate of approximately 20 inches/acre/year. <br /> Based on this assimilation rate, the land area required to assimilate this <br /> hydraulic load is calculated as; <br /> 131,400 gal/year = .24 acres <br /> 27,154 gal/acre/inch x 20 in/year <br /> Nitrogen Loading: <br /> The typical domestic wastewater contains approximately 25 ppm of nitrogen. <br /> Based on this concentration of nitrogen in the treated waste stream, the land <br /> area required to assimilate the nitrogen contained in the waste stream is <br /> calculated as: <br /> .1314 MGY x 25 MG/L-N x 8.34 = .11 acres <br /> 250 lb-N/ac/year <br /> Phosphorus Loading: <br /> Typical domestic wastewater contains approximately 5 ppm or mg/1 of <br /> phosphorus. This can be assimilated at a rate of approximately 100 lb/ac/yr <br /> allowing for utilization and assimilation or adsorption in the soil. The <br /> phosphorus loading contained in the waste stream can be assimilated on a site <br /> containing: <br /> .1314 MGY x 5 MG/L-P x 8.34 = .05 acres <br /> 100 lb-P/ac/yr <br /> • <br />