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<br /> TABLE 4 <br />Stormwater Pollutant Concentrations <br /> Durham, N.C. <br /> (Colston, 1974) <br /> . <br /> Mean Standard Range (mg/.Q,) <br />Pollutant mg/9- Deviation Low High <br />COD 170 135 20 1042 <br />TOC 42 35 5.5 384 <br />Total Solids 1440 1270 194 8620 <br />Volatile Solids 205 124 33 1170 <br />Total Suspended Solids 1223 1213 27 7340 <br />Volatile Suspended Solids 122 100 5 970 <br />Kjeldahl Nitrogen as "Nil .96 1.8 .1 11.6 <br />Total Phosphorus lip" .82 1.0 . 2 16 <br />Fecal Coliform (#/ml) 230 240 1 1000 <br />Aluminum 16 8.15 6 35.7 <br />Calcium 4.8 5.6 1.1 31 <br />Cobalt .16 .11 .04 .47 <br />Chromium .23 .10 .06 .47 <br />Copper .15 .09 .04 .50 <br />Iron 12 9.1 1.3 58.7 <br />Lead .46 .38 0.1 2.86 <br />Magnesium 10 4.0 3.6 24 <br />Manganese .67 .42 .12 3.2 <br />Nickel .15 .05 .09 .29 <br />Zinc .36 .37 .09 4.6 <br />Alkalinity 56 30 24 124 <br /> <br />10 <br />