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I Design <br />Point <br />Basin <br />Basin Area <br />Imperviousness <br />1 % <br />Slope <br />% <br />Runoff Coeficients <br />5 Yr 100 Yr <br />Lc <br />11 <br />Ti <br />min <br />Tt <br />min <br />Tc <br />min <br />Rainfall Intensity I (in/hr) <br />5 Yr 100 Yr <br />Basin Flows Q (cfs) <br />5 Yr 100 Yr <br />Area <br />Soil Type A/B <br />Soil Type C/D <br />.-. N <br />R -1 <br />R -2 <br />R -3 <br />31.31 <br />23.42 <br />50.08 <br />11.07 <br />15.93 <br />25.87 <br />20.24 <br />7.49 <br />24.21 <br />2.00 <br />2.00 <br />15.00 <br />0.011 <br />0.009 <br />0.010 <br />0.136 <br />0.112 <br />0.204 <br />0.456 <br />0.409 <br />0.478 <br />690 <br />1690 <br />2350 <br />37.7 <br />41.3 <br />36.2 <br />6.039 <br />41.81 <br />61.67 <br />44 <br />83 <br />98 <br />1.85 3.46 <br />1.20 2.24 <br />1.07 2.00 <br />7.88 49.40 <br />3.15 21.49 <br />10.94 47.89 <br />Reclamation Runoff Calculations <br />Soil Runoff Coeficient Table <br />5 Yr 100 Yr <br />2 <br />Type A/B 0.088 0.362 <br />Type C/D 0.162 0.508 <br />15 <br />Type A/B 0.17 0.42 <br />Type C/D 0.24 0.54 <br />P:\23511\ 133-23511-10002 \Deliverables\Drainage Report\RunofCalculations.xls <br />Iverson Mine <br />Site Imperviousness Table <br />Lawn <br />Mining Conitions <br />2 <br />15 <br />1 -hour Point Rainfall Depth <br />5 Yr 100 Yr <br />PI 1.49 2.78 <br />