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00011 <br /> 6 <br /> forage crops can accept significantly higher waste constituent loadings than can <br /> forest crops. A mature stand of fescue can receive up to 300 lbs. of nitrogen.per <br /> acre per year, while a mature forest can receive and utilize approximately 200 lbs. <br /> of nitrogen per acre per year. Similarly, phosphorus applications onto a forested <br /> site may be less than that onto a pastured. site. The nutrient uptake, however, is <br /> only one means of nutrient balance in the system. The other means of achieving a <br /> nutrient balance iz through fixation and transformations which occur in the soil. <br /> Nutrient transformations such as the conversion of nitrogen to nitrogen oxide and <br /> subsequent transpiration occurs much more readily in a forested system than a foraged <br /> or pastured system. Based on the anticipated waste flow of 25,000 gpd and typical <br /> wastewater characteristics of 25 ppm-Nitrogen, 10 ppm-phosphorus, and 60 ppm-organic <br /> matter, the land area required to assimilate each of these hydraulic and process <br /> constituents is calculated below. These calculations are <br /> Hydraulic Load: <br /> 25,000 gpd x 365 days/yr = 8.1 ac. <br /> 27154 gal/ac/in x 41.54 in/yr <br /> The nitrogen load, phosphorus load and organic load generated at this facility are <br /> determined based on the 25,000 gpd hydraulic load and average wastewater <br /> characteristics. Each is calculated below. <br /> Nitrogen: <br /> .025 GD x 8.34 x 25 ppm-N x 365 days/yr = 1902.6 lbs-N/yr <br /> Phosphorus: <br /> .025 MGD x 8.34 x 10 ppm-P x 365 days/yr = 761 lbs-P/yr <br /> Organic Load: <br /> .025 MGD x 8.34 x 60 ppm-Organics x 365 days/yr = 4566 lbs-Organics/yr <br />