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Job No. : 180105 <br /> Date : 6/15/2019 r2 <br /> Calculated by : sjb <br /> Checked by : SJB <br /> Sheet 1 of 2 <br /> Nitrate Assesssment <br /> ā‘A Formula <br /> This analysis relies on the Hantzsche-Finnemore equation to predict, <br /> to the extent possible,the impact of the subject OWTS nitrate load <br /> on the local groundwater. See the attached report for sources of data. <br /> I * n,ā€ž(1-d)+R * nb <br /> nr= <br /> (I+ R) <br /> Where, <br /> nr Average concentration of nitrate-nitrogen in the groundwater(mg/L) <br /> Volume rate of wastewater entering the soil averaged by the parcel size(mm/year) <br /> nā€ž, Total dissolved nitrogen in the wastewater(mg/L) <br /> d Fraction of nitrate-nitrogen loss to the soil (%) <br /> R Average amount of rainfall (mm/year) <br /> nb Background nitrate-nitrogen concentration of rainfall recharge to the groundwater(mg/L) <br /> © Data <br /> The following data values have been gathered from available sources of field testing, imperial <br /> data from technical studies in the local area, and industry source documents. <br /> I Volume of Wastewater: 700 gpd (gallons per day) <br /> 255500 gpy (gallons per year) <br /> 34157.8 ft3/y (cubic feet/year) <br /> Parcel size : 44867 sf (square feet) <br /> Application depth: 0.761 ft/y (feet per year) <br /> 232.0 mm/y (millimeters per year <br /> APPLIED WASTEWATER SOLUTIONS, INC <br />