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Nitrogen Loading Study Report Page 5 <br /> 24754 EAST RIVER ROAD <br /> WKA No. 11306.01 <br /> January 13, 2017 <br /> Revised., March 7, 2017 <br /> 5.5.1 Hantzsche-Finnemore Calculations <br /> The following table and calculations show the estimated nitrogen inputs and the resultant <br /> average concentration of nitrate-nitrogen in recharge water calculated using the high and low <br /> estimates (70 mg/L and 20 mg/L) for the amount of total nitrogen in domestic wastewater, <br /> assuming no nitrogen loss due to denitrification. <br /> Table D- Hantzsche-Finnemore Groundwater Impact Summary <br /> Units High Estimate Low Estimate <br /> I in/yr 0.18 0.18 <br /> nw mg/L 70 20 <br /> d* unitless 0 0 <br /> R in/yr 19.37 19.37 <br /> ne mg/L 1.91 1.91 <br /> nr I mg/L 2.53 2.07 <br /> (21,900 -La-1 + 16,425 e 3 z <br /> year year 231 in acres ft in <br /> / 7.95 acres x gal x 43,560 ftz x 144 inz - 0.18 year <br /> 153.957 in- acre <br /> _ year in <br /> R 1937 <br /> 7.95 acres = . year <br /> (0.178 Yr x 70 m9)x (1 - 0) + (19.37 x 1.91�) my <br /> n,.(high) _ = 2.53— <br /> (0.178" + 19.37" L <br /> in <br /> (0.178 x 20—"�92) x(1- 0) + (19.37 x 1.91 m9) mg <br /> n (iow) _ = <br /> 2.07a- <br /> (0.178 " <br /> .07— <br /> (0.178 " + 19.37-) L <br /> The resultant high concentration of total nitrogen was calculated to be 2.53 mg/L and the low <br /> concentration of total nitrogen was calculated to be 2.07 mg/L. <br /> 5.6 Impact of Nitrogen Loading <br /> The calculated concentration of total nitrogen was compared to the Maximum Contaminant <br /> Level (MCL) of 10 mg/L for nitrate as nitrogen. The worst case assumption of a complete <br /> conversion of total nitrogen to nitrate was used and the calculated concentrations were <br />