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Stru <br /># <br />SWS <br />#Soil K L (ft) S (%) C P PS # <br />Sediment <br />(tons) <br />Peak <br />Sediment <br />Conc. <br />(mg/l) <br />Peak <br />Settleable <br />Conc <br />(ml/l) <br />24VW <br />(ml/l) <br />0.1 4,228 2.41 1.60 <br />#4 0.1 4,228 2.41 1.60 <br />#3 1 0.300 400.00 7.90 0.0310 0.9000 1 0.0 1 0.00 0.00 <br />2 0.300 300.00 23.00 0.0310 0.9000 1 9.6 42,344 24.13 9.94 <br />2,089.4 695,730 396.54 195.64 <br />#2 2,094.5 659,524 375.91 94.74 <br />#1 13.8 1,617 0.00 0.00 <br />Subwatershed Time of Concentration Details: <br />Stru <br /># <br />SWS <br />#Land Flow Condition Slope (%) <br />Vert. Dist. <br />(ft) <br />Horiz. Dist. <br />(ft) <br />Velocity <br />(fps)Time (hrs) <br />#3 1 3. Short grass pasture 11.50 175.72 1,528.00 2.710 0.156 <br />#3 1 Time of Concentration: 0.156 <br />#3 2 <br />5. Nearly bare and untilled, and <br />alluvial valley fans 23.00 227.24 988.00 4.790 0.057 <br />#3 2 Time of Concentration: 0.057 <br />#5 1 3. Short grass pasture 19.00 196.84 1,036.00 3.480 0.082 <br />#5 1 Time of Concentration: 0.082 <br />#6 1 3. Short grass pasture 10.00 364.30 3,643.00 2.520 0.401 <br />#6 1 Time of Concentration: 0.401 <br />#6 2 <br />5. Nearly bare and untilled, and <br />alluvial valley fans 2.00 7.00 350.00 1.410 0.068 <br />#6 2 Time of Concentration: 0.068 <br />#6 3 <br />7. Paved area and small upland <br />gullies 1.00 0.50 50.00 2.010 0.006 <br />#6 3 Time of Concentration: 0.006 <br />#8 1 3. Short grass pasture 10.00 98.40 984.00 2.520 0.108 <br />#8 1 Time of Concentration: 0.108 <br />#11 1 3. Short grass pasture 8.00 941.00 11,762.50 2.260 1.445 <br />#11 1 Time of Concentration: 1.445 <br />#11 2 <br />5. Nearly bare and untilled, and <br />alluvial valley fans 1.50 2.25 150.00 1.220 0.034 <br />#11 2 Time of Concentration: 0.034 <br />#11 3 <br />7. Paved area and small upland <br />gullies 1.00 0.24 24.00 2.010 0.003 <br />#11 3 Time of Concentration: 0.003 <br />#14 1 <br />5. Nearly bare and untilled, and <br />alluvial valley fans 27.00 49.14 182.00 5.190 0.009 <br />#14 1 Time of Concentration: 0.009 <br />#14 2 3. Short grass pasture 9.00 121.68 1,352.00 2.400 0.156 <br />#14 2 Time of Concentration: 0.156 <br />Filename: Exhibit 7 Item 23 Part B 10-Yr 24-Hr Section 25 During Mining.sc4 Printed 03-17-2022 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 36