Laserfiche WebLink
<br />TABLE 17 <br /> <br />Land Use Effects on Total Solids Concentration <br />(Sartor and Boyd, 1972) <br /> <br />- <br /> <br />Total Solids Loading <br /> <br />Land Use <br /> <br />Numerical <br />Mean <br />(lb/curb <br /> <br />Weighted <br />Mean <br />mil <br /> <br />Residential <br />low/old/single <br />low/old/multi <br />med/new/single <br />med/o1d/single <br />med/o1d/multi <br /> <br />Industrial <br />light <br />medium <br />heavy <br /> <br />Commercial <br />central <br />business district <br />shopping center <br /> <br />Overall <br />1 lb/curb mile = 0.28 kg/curb km <br /> <br />1,200 <br /> <br />850 <br />890 <br />430 <br />1,200 <br />1,400 <br /> <br />2,800 <br /> <br />2,600 <br />890 <br />3,500 <br /> <br />290 <br /> <br />290 <br />290 <br /> <br />1,400 <br /> <br />Ohio. These values are shown in Table 18. The comparison is <br /> <br />with raw sewage, however, and a comparison with secondary treated <br /> <br />sewage would result in higher percentages. For example, a <br /> <br />comparison with secondary sewage treatment plant effluent would <br /> <br />of the treatment plant effluent BOD. <br /> <br />reveal annual stormwater runoff BOD loads averaging 60 percent <br /> <br />In Durham, N.C., Bryan (1972) found that during the 1972 <br /> <br />calendar year the pollutant loadings were as shown in Table 19. <br /> <br />When compared to domestic waste, the urban stormwater contributed <br /> <br />approximately 48 percent of the total COD, 41 percent of the <br /> <br />total BOD and 95 percent of the total suspended solids on a <br /> <br />lbs/acre/year basis. Bryan also estimated the overall pollutant <br /> <br />39 <br /> <br />:>-. - <br />