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r <br /> Table 12: Summary of Performance of Raw Sewage Plots During <br /> Phase I (January 1979 through May 1980) <br /> Parameter Raw Sewage Raw Plot Effluent <br /> Mean Range of Mean Range of Conc. <br /> Conc. Samples Conc. Samples Removal <br /> (mg/1) (mg/1) (mg/1) (mg/1) (x) <br /> SOD 165 62-270 31 22 3-50 29 87 <br /> TOC 93 44-204 19 36 21-54 36 61 <br /> Suspended Solids 140 40-464 33 24. 5 2-122 46 82 <br /> u <br /> Total Phosphorus 8.23 1 .0-17.7 20 4. 1 0.5-8.0 30 50 <br /> TKN - N 29.2 12.6-117 19 9.7 2.4-43 32 67 <br /> NII - N 18.0 3.5-136 31 2.8 0.04-13 45 84 <br />