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Table 5. Predicted vs actual removal efficiencies on overland flow systems receiving pond effluent. <br /> ROD TSS NH,-N <br /> Calculated Predicted Predicted <br /> detention Applied Predicted .Actual -actual Applied Predicted Actual -actual Applied Predicted Actual -actual <br /> time Runoff cont. removal removal removal cont. removal removal removal cont. removal removal removal <br /> System (min) traction (mg(L) W M W (mg/L) N) N) N) (mg/L) (%) (96) N) <br /> Utica,Mississippi 354 0.80 22 99+ 95 4 30 95+ 93 2 3.5 99 99 0 <br /> (Peters et al. 91 0.80 22 97 74 23 30 95+ 71 24 3.5 95 95 0' <br /> 1981) <br /> W Easley,South Caro- <br /> lina (Pollock 1979) 56 0.70 28 90 63 27 60 92 53 39 1.0 85 72 13 <br /> Carbondale,Illinois 17 0.83 27 69 40 29 22 86 — — 4.5 51 47 3 <br /> (Hinrich et al. 17 0.83 18 69 73 -4 24 86 — — 8.0 51 68 -17 <br /> 1980) 17 0.83 70 69 85 -16 35 86 72 14 31.6 51 74 -23 <br /> 24 0.83 44 64 68 -4 34 84 51 33 29.6 43 38 5 <br /> 24 0.83 9 75 38 37 — — — — 13.6 60 74 -14 <br /> 24 0.83 15 75 36 39 26 87 — — 9.8 60 58 2 <br /> 24 0.83 20 75 31 44 24 87 65 22 16.8 60 74 -14 <br /> Mean 17.9 22.3 -4.5 <br /> Std.dev. 21.1 13.2 11.6 <br />