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Appendix B <br />Summary Coal Mine Waste Disposal Area Ditches and Culverts <br />Ditch Grade <br />Minimum Grade <br />Maximum Grade <br />Ri Rap <br />pea <br />Min <br />I Max <br />Depth <br />Velocity <br />Depth <br />Velocity <br />D5o inch <br />Flo <br />Feet <br />Ft/Sec <br />Feet <br />FtlSec <br />cfs <br />F1 <br />4.2% <br />4.2-/.l <br />0,421 <br />4.31 <br />0.421 <br />4.3 <br />6.73 <br />F2 <br />1 1.3%1 <br />1.3%1 <br />0.471 <br />2.61 <br />0.471 <br />2.61 <br />1 5.17 <br />F3 <br />1 4.4% <br />4A%j <br />0.341 <br />3.81 <br />0.341 <br />3.81 <br />1 3.83 <br />F4 <br />1 30.0%1 <br />30.0%1 <br />1.401 <br />14.01 <br />1.401 <br />14.01 <br />241 <br />3$.17 <br />F5 <br />1 2.0%1 <br />2.0%1 <br />0,391 <br />2.91 <br />0.391 <br />2.91 <br />1 3.99 <br />F6 <br />1 1.1%1 <br />1.1%1 <br />0.401 <br />2.11 <br />0.401 <br />2. 1_1 <br />1 3.93 <br />F7 <br />1 2.0%1_ <br />2.0%1 <br />ITrapezoidal <br />Channel <br />151 <br />37.95 <br />Fla <br />1 33.0%1 <br />33.0%1 <br />1.201 <br />13.91 <br />1.201 13,91 <br />24 <br />37.95 <br />F8 <br />1 4.6%1_ <br />4.6%1 <br />0.371 <br />4.21 <br />0.371 4.2 <br />5.22 <br />F9 <br />1 30.0%1 <br />30.0%1 <br />6. 1 bT-6.21 <br />0.101 6.171 <br />1 2 <br />1.40 <br />IF 10 <br />1 2.2%j <br />2.2%1 <br />0.641 <br />3.71 <br />0.541 3.71 <br />9.63 <br />F11 <br />1 3.4%1 <br />3.4%1 <br />0,341 <br />3.41 <br />0.341 3.41 <br />3.56 <br />F12 <br />1 3.6-/.l <br />3.6%1 <br />0,391 <br />3.8 <br />0.39 3,8 <br />5.03 <br />F13 <br />1 2.0%1 <br />2.0%1 <br />1.541 <br />6.31 <br />1.54 6.3 <br />22.28 <br />F14 (2 %) <br />1 2.0%1 <br />2.0% <br />1 <br />[Trapezoidal <br />Channel <br />1 91 <br />11.73 <br />F14 (30% ) <br />1 26.0%1 <br />26.0%1 <br />ITrapezoidal <br />Channel <br />1 181 <br />11.73 <br />F15 I <br />1.8% <br />1.8%1 <br />0.48 <br />2.71 <br />0.481 <br />2.74 <br />0.96 <br />F16 <br />10,0-/.l <br />10.0%1 <br />1.301 <br />8.01 <br />1.301 <br />7.981 <br />181 <br />21.41 <br />F17 <br />1.0%j <br />1.0%1 <br />0.68 <br />2.6 <br />0.681 <br />2.61 <br />1 2.14 <br />F18 <br />3.4% <br />3.4%1 <br />0.301 <br />3.11 <br />0.301 <br />3.11 <br />1 2.41 <br />F19 1 <br />2-9%1 <br />2.9%1 <br />0.501 <br />4.0 <br />0.501 <br />4.01 <br />1 8.88 <br />F20 1 <br />2,0%1 <br />2,0%1 <br />0.491 <br />3.31 <br />0.491 <br />3.31 <br />1 6.96 <br />F21 -1 1 <br />20,0%1 <br />30.0% <br />___0.501 <br />7.51 <br />0.501 <br />7.5f <br />121 <br />11.09 <br />F21 -2 1 <br />30.0%1 <br />30.0%1 <br />0.901 <br />11.11 <br />0.901 <br />11.11 <br />181 <br />11.59 <br />F22 1 <br />1.0% <br />1.0%1 <br />0.561 <br />2.31 <br />0.561 <br />2.3 <br />1.08 <br />F23 1 <br />1.3%1 <br />1.3%1 <br />0.211 <br />1.7 <br />0.211 <br />1.71 <br />1 <br />0.12 <br />East Div, 1 <br />2.5%1 <br />5.0%1 <br />ITrapezoidal <br />Channel <br />121 <br />19780 <br />W. Div #2 1 <br />4.0%1 <br />4.0%1 <br />0.33 <br />2.3 <br />_0.331 2.3 <br />1.98 <br />22.0% <br />22.0% <br />Trapezoidal <br />Channel <br />12 <br />1.98 <br />W. Div #1 1 <br />3.5%1 <br />3.5%[_ <br />1.101 <br />4.11 <br />1.101 <br />4.11 <br />1 <br />9.19 <br />Culvert: <br />F2130" <br />34.01 <br />F4 39' <br />18.36 <br />F5112" (temporary)0.47 <br />F6124" (temporary) <br />21.41 <br />Flow depth in feet does not include freeboard. <br />MR -161 App. B -2 09/14 <br />