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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 TSSM1.5 <br /> Land Use EMC m L EMC m EMC m L <br /> A ricultural 0.14 2.02 70 <br /> Commercial 0.29 1.34 88 <br /> Residential 1.05 2.61 39 <br /> Industrial 0.31 2.06 94 <br /> Forest/Open 0.05 1.44 11 <br /> Institutional 0.31 2.07 39 <br /> Wetlands 0.05 1.14 5 <br /> Table 2: STEPL Load Proiections for PC-South Relief Canal <br /> Wafersfies iVTLoad(no" "P Load'(no BOD Load Sediment <br /> BMP) BMP) (no BMP) Load (no <br /> <::..� BMP <br /> IN ear Ib ear 11b/year t/ ear <br /> PC-South 145,960 19,4641 666,3931 1,994 <br /> Total 145,960 1A ARAI 666 393 <br /> 1,994 <br /> To a oa =aa5d uses'{wet <br /> Sources N Load -1 P Loan 1§01)"L-bad 7 Sedimenf <br /> (Ibfyr) (Ib/yr) (Ib/yr) Load (tlyr) <br /> Urban 34,489 6,109 120,671 278 <br /> Cropland 24,800 1,971 231,858 217 <br /> Pastureland 29,067 2,243 93,306 45 <br /> Forest 1,220 43 929 1 <br /> Feedlots 0 0 0 0 <br /> User Defined 3,333 1,332 9,418 7 <br /> Septic 322 126 1,316 0 <br /> Gully 0 0 0 0 <br /> Streambank 0 0 0 0 <br /> Groundwater 0 0 0 0 <br /> Total 1 3,232 11,825 457,497 547 <br /> Table 3:Comparison of Averap-e 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 US YS Flow <br /> Data 0.159 1.25 15 6 <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 /> 142 <br />