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<br />Tabie 18 <br /> <br />Comparison of Stormwater Runoff Loads and <br />Sanitary Sewage Loads (lbs/yr/acre)* <br />(Weibel, Anderson, and Woodward, 1964) <br /> <br />Constituent Stormwater Sanitary % Storm <br /> Runoff Sewage (raw) Sanitary <br />SS 730 540 140 <br />vsS 160 360 44 <br />COO 240 960 25 <br />BOD 33 540 6 <br />P04 2.5 27 9 <br />Total-N 8.9 81 11 <br />* Multiply by 1.12 to obtain kg/yr/ha. <br /> <br />TABLE 19 <br /> <br />Urban Runoff Pollutant Yield <br />during 1972 in Durham, N.C. <br />(Bryan, 1972) <br /> <br />Parameter* <br /> <br />Pounds/Acre/Year <br /> <br />Kg/Ha/Year <br /> <br />COD <br />TOC <br />TS <br />TVS <br />SS <br />VSS <br />TKN <br />Tota1-P <br />Pb <br /> <br />938 <br />187 <br />7700 <br />1458 <br />6691 <br />797 <br />6.1 <br />4.7 <br />2.9 <br /> <br />1208 <br />212 <br />8740 <br />1655 <br />7594 <br />905 <br />6.9 <br />5.3 <br />3.3 <br /> <br />. <br /> <br />40 <br /> <br />__ ____ L, <br />