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I <br /> DRAINING 2 Drainage Course - Rock Outcrop to Slope & Check Dam <br /> Check Dam Plan View Check Dam - cross section <br /> PI <br /> C e d— <br /> ��- .nuwJw* r riprap depth = 30" <br /> 4' slope Alh <br /> length WIN <br /> _ 24" <br /> 12' w 4' w $'--� 4� w 81 <br /> Channel Width <br /> Channel Width <br /> = 4' diameter rock <br /> 2:1 sideslopes <br /> 2' - 3' diameter rock <br /> check dam - entire <br /> width of channel botttom = 12 - 18" diameter rock <br /> 4'd rock keyed Ito extend G,, L• o<« • <br /> no than 30" '.Jr6,v -606ee <br /> 4' sideslope graded for positive drainage <br /> - - - ,f from east bench cut DRAWING 2 <br /> Colorado Department of Natural Resources <br /> 8,h Divislon of Minerals and Geology <br /> _r Active Mine Reclamation Program <br /> 4' slope! Frusta Mine <br /> i <br /> length Bond Revocation M81-015 <br /> 8' w Drainage Course- Rock Outcrop to Slop <br /> and Check Dam-x section&plan <br /> jScale Dale Sheet No. <br /> n.l.s. 1100 2 of 2 <br />