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60.00 <br />50.00 <br />40.00 <br />en <br />E <br />a <br />30.00 <br />z <br />m <br />0 <br />E- 20.00 <br />10.00 <br />0.00 <br />0 0 0 0 0 0 0 0 0 0 0 <br />o, rn a a a, 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N0N 0 0 0 <br />M M M t�f M M M M M M M M M M M M M M M M M M M N <br />Sampling Date <br />Total Nitrogen Concentrations of Waterloo Biofilter Discharge vs. Influent During Testing at the <br />Massachusetts Alternative Septic System Test Center June 1999 - June 2001. Al DB, A2 DB, A3 DB = <br />Replicates 1-3 respectively, DCWEST = Influent <br />Fecal Coliform Densities of Waterloo Biofilter Discharge vs. Influent During Testing at the <br />Massachusetts Alternative Septic System Test Center June 1999 - June 2001. Al DB, A2 DB, A3 DB = <br />Replicates 1-3 respectively, DCWEST = Influent <br />100000000 <br />10000000 <br />E <br />$ 1000000 <br />as <br />a <br />100000 <br />°u <br />E 10000 <br />o <br />U 1000 <br />m <br />100 <br />0 <br />t\1 r1 l.1 M M NI l�f N1 M M M t� M M c� MM M M M M M N1 N \ N <br />Sampling Date <br />Performance Results — WaterlooBiofilter® Page 13 of 28 <br />—Al DB <br />-a A2 DB <br />-t -A3 DB <br />�E-DC WEST <br />