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AN <br />L\ <br />w`a5 j <br />Sediment Primary Spillway <br />Pond 1 <br />m. Spillway <br />Ditch <br />80 in <br />Sediment Pond 1 Spillway Designs <br />Principal Spillway <br />I 0 50n. Freeboard <br />AOfi�{ <br />Trapezoidal Channel II <br />Equal Side Slopes <br />Channel Lining: Grouted dprap (Dw = 0.5 ft) <br />I NOTES, <br />Top of Pond: 5' wide embankment <br />Spillway / <br />Embankment material fill and <br />compaction specifications can be <br />found on Map G -6 <br />Hydraulic calculations are in Table 6 -1 <br />in Appendix 6. <br />AP. Revenue Mine <br />10659 <br />10658 <br />CD 10657 <br />2 <br />C <br />O <br />w 10656 <br />10 -YI <br />10655 <br />Stage Storage Curve <br />Sediment Pond 1 <br />10654 P <br />0.0 <br />ELEV <br />(ft) <br />Width <br />(ft) <br />LENGTH <br />(ft) <br />0.5 <br />Accumulative Storage (Acre -Ft) <br />1.0 <br />M <br />;58.00) <br />Storage volume computations <br />Revenue Mine <br />Sediment Pond 1 <br />AREA AVG. INTERVAL STORAGE ACC. STAGE', <br />(ac) AREA (ft) (ac -ft) STORAGE INTERVAL <br />(ac) (ac-ft) (ft) <br />10654.00 <br />N/A <br />N/A <br />0.1512 <br />(1 <br />N/A <br />1 <br />-YR EVEN <br />RUNOFF <br />0.55 AC- <br />0.1593 <br />0.1593 <br />EME <br />GENCY SP <br />LLWAY (1 <br />N/A <br />0.1839 <br />0.1757 <br />1.00 <br />0.1757 <br />0.3350 <br />25-YR EV <br />NT RUNOF <br />(0.44 AC- <br />T) <br />0.2013 <br />0.1926 <br />1.00 <br />0.1926 <br />0.5277 <br />3.00 <br />10658.00 <br />N/A <br />N/A <br />0.2195 <br />EVENT R <br />OFF (0.2 <br />AC -FT) <br />0.7381 <br />4.00 <br />10659.00 <br />N/A <br />N/A <br />0.2387 <br />0.2291 <br />1.00 <br />0.2291 <br />0.9672 <br />5.00 <br />RINCIPAI <br />RPII I mmv <br />MnaaA <br />nn, <br />10654 P <br />0.0 <br />ELEV <br />(ft) <br />Width <br />(ft) <br />LENGTH <br />(ft) <br />0.5 <br />Accumulative Storage (Acre -Ft) <br />1.0 <br />M <br />;58.00) <br />Storage volume computations <br />Revenue Mine <br />Sediment Pond 1 <br />AREA AVG. INTERVAL STORAGE ACC. STAGE', <br />(ac) AREA (ft) (ac -ft) STORAGE INTERVAL <br />(ac) (ac-ft) (ft) <br />10654.00 <br />N/A <br />N/A <br />0.1512 <br />10655.00 <br />N/A <br />N/A <br />0.1675 <br />0.1593 <br />1.00 <br />0.1593 <br />0.1593 <br />1.00 <br />10656.00 <br />N/A <br />N/A <br />0.1839 <br />0.1757 <br />1.00 <br />0.1757 <br />0.3350 <br />2.00 <br />10657.00 <br />N/A <br />N/A <br />0.2013 <br />0.1926 <br />1.00 <br />0.1926 <br />0.5277 <br />3.00 <br />10658.00 <br />N/A <br />N/A <br />0.2195 <br />0.2104 <br />1.00 <br />0.2104 <br />0.7381 <br />4.00 <br />10659.00 <br />N/A <br />N/A <br />0.2387 <br />0.2291 <br />1.00 <br />0.2291 <br />0.9672 <br />5.00 <br />:.s• <br />k� a21,?(eIN <br />00471,"A <br />IX <br />DATE <br />,voen+ Jam'/\ Greg Lewicki And Associates <br />SCALE nsm Wa n wr EM. l 55;55 <br />AS SHOWN P ®kx, CO , us 05F Wi39 EMaI- inmrpl� adz <br />w...,. <br />Map G -2: Sediment Pond 1 <br />Design Details <br />Revenue Mine <br />Star Mine Operations <br />2721 <br />of Recl+ <br />ng&S1 <br />