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L <br /> Therefore: <br /> I = 74,750 gals wastewater/week X 52 weeks/yr= 3,887,000 gals/yr <br /> 120,000 sq ft area-43,560 sq ft/Ac =2.76 Ac gross area of wastewater entering soil. <br /> 2.76 Ac. X 27,154 gals/Ac-in of water= 74,945 gals/inch of wastewater <br /> 3,887,000 gals/yr- 74,945 gals/inch of wastewater= 51.9 inches wastewater/yr <br /> r= 14.2 inches of rainfall <br /> n,,= 62 mg NIL <br /> nb= 2 ppm NO3-N <br /> d= 25% loss by denitrification <br /> n,= 51.9 X 62(1- 25%) + 14.2(2 ppm) <br /> 51,9+ 14.2 <br /> n,= 369 mg NO3-NIL wastewater <br /> 36.9 mg NO3-NIL X 282,929 L wastewater/week= 10.44 kg NO3-N/week. <br /> Total yearly nitrate-nitrogen loading from the Open Air Mall and the Bingo Parlor is calculated <br /> to be 542.9 kg NO3-N/yr. <br /> Using the same data to calculate potential impact upon the underlying groundwater which was <br /> used last year: The total gross area of the leachfields and seepage pits is approximately 120,000 <br /> square feet. The total weight of the groundwater under this area, assuming the aquifer is 100 feet <br /> thick, is 339,564,234 kg. Therefore, the calculated yearly impact to the underlying <br /> groundwater by the combined wastewater flows from the Open Air Mall and Bingo Parlor, <br /> reported in terms of nitrate-nitrogen,is 543 -340 = 1.6 ppm NO3-NIL. <br /> L <br /> L <br /> F 8 <br /> LVaffey Ag? search <br />