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t KLEINFELOER <br /> iL"W'+r <br /> Nr = Average calmilatpA nitratr_nitrnnnn in n.n..ndv3te r ^l:it: a eSriG SG ii cca <br /> And nrn Wtstinn_.. A XT <br /> "./-Ww 'vf u Waiang irriits JJM acres on septic tanks(unittacre)=.47 <br /> w z Annual wastewater loading per dwelling unit per acre (inches) = 2.0 inches (based <br /> on 150 gpd/residence) <br /> N. = Nitrate concentration of nitrified leachfieid effluent (ma/1) = 25 to 45 maA t ri_al <br /> (Hantzsche and Finnemore(19921) <br /> I) = Parre.M _ianrrifc3„tioa ..f IC..A%9.1d ef£ue^tit _ Q.2.°i pwccni (v.1 lV v.2J percent <br /> and L;—�_.....�.. /.nnn. n n __.. . <br /> qr•..� r.,. ..y...w..uc auu a.m.�luv1� ka176/. V.LS staccied liven me large dept[! to <br /> groundwater( feet} aiui a majuiiq of the soils encountered consist of tine clays <br /> .-.. <br /> auu suu inni lend to increase denitrification) <br /> r = Annual deep percolation of precipitation (inches) = 4.0 inehe increase over the 3 <br /> inches used by Mr. Hantzsche in the Stocktonarea`to reflect the sandv soil <br /> conditions anticipated at the percolation depths for the leach trenches) <br /> N. Backgrronrid nitrate. rnnrontratinn of the ja .. ..—i <br /> moA ne M <br /> v.0 ..p.y414L1W1!J as tyllV W J. <br /> Low Estimate <br /> N, = 47(2)(35)0 —0.25) +3.91 '(4) 247+ 15.6 = 8.2 me/I as N <br /> .47(2)+4 0 94+4 <br /> High Fatittrite <br /> N n7lm.145%A nen+a n. / n. __ <br /> .•e it`45%. —V.LlI 3.91141 A J1./ T1J.0 7.o illi as <br /> .47(2)+4 0.94-4 <br /> Average IN,-5.9 mg/l as N <br /> For the purpose of this analysis, we have assumed that the proposed office building has four <br /> employees. Using published criteria, we assume each employee will generate approximately <br /> gallons per person per day of wastewater (80 gallons total, or appmximatPly 0.5 residence's <br /> worth) <br /> 20-08.5.O1.Li012011R602 lune 14,2001 <br /> W 2W11Uear"det hlc. Page 3 of <br />