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` January 4,2006 <br /> NOA Project Number: E05166B <br /> Table 2. <br /> Summary of Nitrate Mass Balance Analysis. <br /> Result Average Daily Effluent Leachfield Deep <br /> Acres Flow(Q) Concen- Deni _ Percolation of <br /> Plate (Nc)* (A) (Table 3) tration(Nw) cation <br /> nfi Rainfall(R) <br /> (mg/L-N) (gpd) (mg/L-N) cation(d) (Plate 9) (in.) <br /> 10 8.8'0' <br /> 8`jp 2 5 490 40 35% �/ 5.76 <br /> (Parcel 1) <br /> M <br /> 11 <br /> (Parcel 2) 8.8 2.5 490 40 35% 5.-6 <br /> 12 8.8C1"'� 2.5 490 40 35% 5.76 <br /> (Parcel 3) <br /> 13 <br /> (Parcel 4) 10.1 2 490 40 35% 5.76 <br /> 14 5.8� 5.5 560 40 35% 5.76 <br /> (Parcel 5) <br /> 15 88cM 2.5 490 40 35% 5.76 <br /> (Parcel 6) <br /> 16 7.9 LI r 490 40 35% 5.76 <br /> (Parcel 7) <br /> * Maximum contaminant level(MCL) for nitrate in drinking water is 10 mg/L-N. <br /> kw /4.6 Impact of Nitrate Loading to Nearby Water Sources <br /> Based on the method and assumptions described,in addition to the geologic setting, the proposed <br /> project will likely not cause a build up of nitrate in the ground water above 1,mg/L-N on Parcels 1 <br /> through 7 over the long tertn*Parcel 4 is 0.1 mg/L over the MCL for nitrate however based on-the <br /> low level of nitrate on the site as a whole,we do not foresee build up of nitrate in the_groundzua*er <br /> / <br /> // Since the Site is relatively flat,we do not predict that percolating effluent will affect any surface <br /> water resources. <br /> 5.0 DISCUSSION OF NITRATE LOADING RESULTS <br /> 5.1 Total Nitrate Impact <br /> ` Based on the method and assumptions described,it is our opinion that the nitrate loading <br /> calculation of the proposed development on the parcels should not cause a build un of nitrate in thy_ <br /> ground water above 10 mg/L-N over the long term.Although parcel 4 is 01 mg/L over the-MCI.- <br /> 6 <br /> heMCI6 <br />