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DRAWING 2 Drainage Course - Rock Outcrop to Slope & Check Dam <br /> Check Dam Plan View Check Dam - cross section <br /> ' 5 cc <br /> - - — — — — — — — — — — - - — — — — — — — — - <br /> maximum riprap depth = 30" <br /> 4' slopelinnnf 8'h <br /> y 124" <br /> ................_ <br /> 12' w 4 w 8� ---> <br /> Channel Width 4 w 8� <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 G = 12 - 18" diameter rock <br /> 4'd rock keyed into extend '� <br /> no higher than 30", 50' cc <br /> 4' up sideslope � --"— graded for positive drainage <br /> _ from east bench cut DRAWING 2 <br /> TColorado Department of Natural Resources <br /> 81h ._ = Division of Minerals and Geology <br /> _ - Inactive Mine Reclamation Program <br /> 4' slope Frusta Mine <br /> length Bond Revocation M81-015 <br /> 8' w Drainage Course - Rock Outcrop to Slop <br /> and Check Dam - x section & Plan <br /> Scale Date T Sheet No. <br /> n.t.s. 1/00 2 of 2 <br />