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POLLUTANT LOAD CALCULATIONS ATTACHMENT <br /> EMCS USED IN MODEL : <br /> Table 1 : Event Mean Concentrations PC-South Relief Canal Watershed <br /> Total P Total N TSS BOD <br /> Land Use EMC mg/L EMC mg/L EMC mg/L EMC mg/L <br /> Agricultural 0 . 14 2 . 02 70 13 <br /> Commercial 0 .29 1 . 34 88 12 <br /> Residential 1 . 05 2 . 61 39 8 <br /> Industrial 0 . 31 2 . 06 94 10 <br /> Forest/Open 0 . 05 1 .44 11 15 <br /> Institutional 0 . 31 2 . 07 39 8 <br /> Wetlands 0 . 05 1 . 14 5 1 . 5 <br /> Table 2 : STEPL Load Projections for PC- South Relief Canal <br /> lb/ ear lb/year lb/year t/ ear <br /> PC -South 145 , 960 19 , 464 666 , 393 11994 <br /> Total 145 , 960 19 ,464 666 , 393 1 , 994 <br /> Urban 341489 61109 120 ,671 278 <br /> Cropland 24 , 800 11971 231 , 858 217 <br /> Pastureland 29 , 067 27243 93 , 306 45 <br /> Forest 11220 43 929 1 <br /> Feedlots 0 0 0 0 <br /> User Defined 31333 11332 91418 7 <br /> Septic 322 126 11316 0 <br /> NEMESES <br /> Gully 0 0 0 0 <br /> Streambank 0 0 0 0 <br /> Groundwater 0 0 0 0 <br /> Total 93 , 232 11 , 825 457 ,4971 547 <br /> Table 3 : Comparison of Average Concentrations PC -South Relief Canal <br /> Source TP mg/L TN mg/L TSS mg/L BOD mg/L <br /> Average Average Average Average <br /> Calculated from STEPL and USGS Flow 0 . 159 1 . 25 15 6 <br /> Data <br /> Field Data USGS , IRFWCD, IRC 0 . 240 1 . 05 11 <2 <br /> DEP Agreement No. G0353 , Attachment A- 1 , Page 10 of 14 <br />