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Particle Size Distribution <br />Ps *1 <br />SMALL AREA EXEMPTION 1 - 9 <br />• <br />UNIT TRAIN LOADOUT - BOWIE NO. 2 <br />SAE -3 <br />SOIL TYPE PROGRESSO LOAM - C <br />SAE -5 SAE-6 <br />DISTURBED NEARLY BARE <br />SAE-8 <br />DATA SUMMARIZED FROM SEDCAD OUTPUT <br />STORM INFORMATION <br />SAE 1 -9 <br />Storm Type: NRCS Type II <br />Design Storm: 10 yr - 24 hr <br />Rainfall Depth: 1.8 inches <br />Particle Size Distribution <br />Ps *1 <br />IN <br />OUT <br />SAE -1 <br />SAE -2 <br />SAE -3 <br />SAE-4 <br />SAE -5 SAE-6 <br />SAE -7 <br />SAE-8 <br />SAE -9 <br />SAE 1 -9 <br />Size (mm) <br />In <br />Out <br />Out <br />Out <br />Out <br />Out Out <br />Out <br />Out <br />15.94 <br />0.32 <br />4.7600 <br />88.00% <br />100.00% <br />Same for SAE 1 -9 <br />2.0000 <br />88.00% <br />100.00% <br />0.17 <br />0.14 <br />0.14 <br />0.01 <br />0.01 <br />Same for SAE 1 -9 <br />42,513 <br />9,498 <br />26.19 <br />0.41 <br />18.82 <br />0.29 <br />0.4200 <br />78.00% <br />100.00% <br />Same for SAE 1 -9 <br />0.0740 <br />28.00% <br />100.00% <br />0.32 <br />0.26 <br />0.26 <br />0.02 <br />0.02 <br />Same for SAE 1 -9 <br />66,320 <br />14,611 <br />40.85 <br />0.47 <br />26.00 <br />0.30 <br />0.0040 <br />20.00% <br />90.48% <br />89.094 <br />91.37% <br />93.53% <br />95.73% 92.30% <br />92.63% <br />97.97% <br />91.22% <br />0.0010 <br />1.00% <br />4.52% <br />4.46% <br />4.57% <br />4,68% <br />4.79% 4.62% <br />4.63% <br />4.90% <br />4.56% <br />STRUCTURE SUMMARY <br />Immediate Total Peak Total Peak Peak <br />Contributing Contributing Discharge Runoff Sediment Settleable <br />Area Area Volume Sediment Conc. Conc. 24 VW <br />(ac) (ac) (cfs) (acre -ft) (tons) (mg/p (irl (mUp <br />SAE -1 <br />IN <br />OUT <br />0.07 <br />0.07 <br />0.06 <br />0.06 <br />0.00 <br />0.00 <br />0.10 <br />DIM <br />37,177 <br />9,054 <br />22.90 <br />0.43 <br />18.28 <br />0.32 <br />SAE -2 <br />IN <br />OUi <br />0.14 <br />0.19 <br />0.11 <br />0.11 <br />0.01 <br />0.01 <br />0.20 <br />0.00 <br />34,468 <br />8,20 <br />21.23 <br />0.45 <br />15.94 <br />0.32 <br />SAE -3 <br />IN <br />OUT <br />0.17 <br />0.17 <br />0.14 <br />0.14 <br />0.01 <br />0.01 <br />0.30 <br />0.10 <br />42,513 <br />9,498 <br />26.19 <br />0.41 <br />18.82 <br />0.29 <br />SAE-4 <br />IN <br />OUT <br />0.32 <br />0.32 <br />0.26 <br />0.26 <br />0.02 <br />0.02 <br />0.90 <br />0.20 <br />66,320 <br />14,611 <br />40.85 <br />0.47 <br />26.00 <br />0.30 <br />SAE -5 <br />IN <br />OUT <br />0.35 <br />0.35 <br />0.29 <br />0.28 <br />0.02 <br />0.02 <br />1.50 <br />0.30 <br />101,916 <br />21829 <br />62.78 <br />0.47 <br />37.93 <br />0.28 <br />SAE-6 <br />IN <br />OUT <br />1.30 <br />1.30 <br />1.07 <br />1.04 <br />0.08 <br />0.08 <br />3.30 <br />0.70 <br />56,920 <br />12466 <br />35.06 <br />0.48 <br />18.22 <br />0.25 <br />SAE -7 <br />IN <br />OUT <br />090 <br />090 <br />0.74 <br />0.73 <br />0.06 <br />0.06 <br />2.10 <br />0.40 <br />51,690 <br />11827 <br />31.84 <br />0.44 <br />16.55 <br />0.24 <br />SAE -8 <br />IN <br />OUT <br />0.38 <br />0.38 <br />0.31 <br />0.30 <br />0.02 <br />0.02 <br />3.10 <br />0.60 <br />180,441 <br />38,92 <br />111.15 <br />0.40 <br />67.49 <br />0.25 <br />SAE -9 <br />IN <br />OUT <br />219 <br />2.19 <br />1.80 <br />1.76 <br />0.14 <br />0.14 <br />3.30 <br />0.70 <br />34,209 <br />7,509 <br />21.07 <br />0.33 <br />10.90 <br />0.17 <br />PR -07 <br />Exh -8 - 187 - <br />2/03 <br />