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<br /> TABLE 2 <br /> Comparison of Quality of Storm Sewer Discharges for Various Cities <br /> BOD5 Total Total <br />Type of Wastewater COD D.O. SS Total Coliforms Nitrogen Phosphorus <br />Location mg/R. mg/R. mg/R. MPN/100 ml mg/R. as N mg/R. as P <br /> Ave. Range Ave. Range Ave. Ave. Range Ave. Range Ave. Ave. <br />Typical untreated <br />municipal 200 100-300 500 250-750 200 100-350 5x107 107 -109 40 10 <br />Typical treated <br />municipal: <br />Primary effluent 135 70-200 330 165-500 80 40-120 2xl07 5x106-5xl08 35 7.5 <br />Secondary effluent 25 15-45 45 25-80 15 10-30 103 102_104 30 5.D <br />00 <br />Storm sewer discharges: <br />Ann Arbor, MI, 1965 28 11-62 2080 650-11,900 3.5 1.7 <br />Castro Valley, CA, 1971 14 4-37 8.4 2x104 4x103-4x104 1.8 <br />Des Moines, lA, 1969 36 12-100 505 95-1053 2.2 0.87 <br />Durham, N.C., 1960 31 2-232 224 40-660 3x105 3xl03 -2x106 0.18 <br />Los Angeles, CA, 1967 9.4 8.9 1013 3x103-2xl06 <br />Madison, WI, 1970 81 10-1000 4.8 2.2 <br />New Orleans, LA, 1967 12 4.5 26 2x106 7xlOL7xl08 <br />Roanoke, VA, 1969 7 30 <br />Sacramento, CA, 1968 108 24-283 58 21-176 71 3-211 6x105 2x104-1x107 <br />Tulsa, OK, 1968 22 1-39 85 12-85 247 ~4-2052 105 lOL106 0.3-1.5 0.2-1.2 <br />Washington, D.C., 1961 19 3-90 332 29-1514 1097 130-11,280 6xl05 105_106 2.1 0.6 <br /> <br />. <br /> <br />. <br />