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'•. <br /> January 4,2006 <br /> NOA Project Number:E06115A <br /> Page 2 <br /> Table 2. <br /> Summa of Nitrate Mass Balance Ana sis. <br /> Average Daily EffluentnRainfall <br /> eep <br /> Result ation of <br /> Acres Flow(Q) Concen-Parcel (Nc) * (A) (Table 3) tration(Nw) all(R)(mg/L N) (gpd) (mg�L-N) 9) (in.)With 7 3 26 2,212 gpd 45 .0residenceWithout 6.1 26 1,722 gpd 454.0 <br /> residence <br /> * llaxitnum contaminant level(MCL) for nitrate in dtinking water is 10 mg/L-N. <br /> Impact of Nitrate Loading to Nearby Water Sources <br /> Without the recreational vehicles or residence, the nitrate load on the property will be significantly <br /> lower than estimated in the Table 2.Based on the method and assumptions described,in addition to <br /> the geologic setting,we do not believe the proposed project will cause a build up of nitrate in the <br /> ground water above 10 mg/L-N over the long term. <br /> Since the site is relatively flat,we do not foresee percolating effluent affecting any surface water <br /> resources. <br /> Methods of Mitigation <br /> Because of the result of the nitrate loading calculation,no mitigation measures are warranted. <br /> LIMITATIONS <br /> Our professional services were performed,our findings obtained,and our conclusions proposed in <br /> accordance with generally accepted engineering principles and practices. This warranty is in lieu of <br /> all other warranties either expressed or implied. Test findings and statements of professional <br /> opinion do not constitute a guarantee or warranty, expressed or implied. <br /> NEIL O.ANDERSON&ASSOC.,INC. <br /> Nancy . Kra <br /> Staff Scientist <br />