Laserfiche WebLink
a 4 1 <br /> L � <br /> REEVE TRUCKING <br /> Page No. 11 <br /> h . <br /> 1 <br /> Mass balance <br /> N` W+ R <br /> N,= Resultant average nitrate-N concentration(mg/0of combined effluent and rainfall percolate. <br /> r, <br /> � W= Uniform waste water loading for study area(in yr <br /> 22 persons using 30 gal/day on a 1 37 acre parcel. <br /> F <br /> 22*30g� 365c�s I f <br /> (T4 19efr 1� 12in1(( ll �l )( J =0.62in 1 yr <br /> W-( dry �l lyear J .37es)(143,560 <br /> { <br /> Nw=Total nitrate-N concentration of waste water percolate =40 mg/l. <br /> d=Fraction of nitrate-N loss due to Denitrification in the soil=25%. <br /> n <br /> + R=Uniform deep percolation of tainfall=3.5'in/yr. <br /> N,,=Background nitrate-N concentration of rainfall=0.17 mg/l. Q �� <br /> F ,� �fi <br /> Nr - (0.62in I yr)(40mg 11)(1-0.25) +(3.5in/yr)(0.17mg 11) <br /> g <br /> (0.62in I yr+3.5in I yr) � , � 4 nr /! 4 17- <br /> � <br /> A� <br /> 1 41 <br /> ussoy <br /> �' 4sSOC`P <br /> I F <br /> i <br />