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10614 <br />?p, <br />Sediment <br />Pond 3 <br />Sediment Pond 3 Spillway Designs <br />Top of Pond <br />Emergency Spillway <br />10 <br />-� <br />Principal Spillway 10620' 2% grade -� <br />�a 1 Baseline Topography 1 <br />10618' <br />Emergency Spillway <br />0.50ft. Freeboard <br />\ 0.50 ft. <br />2 --{ 1.0 ft. I _ 1 <br />Trapezoidal CI hannel <br />Equal Side Slopes <br />Channel Lining: Grouted riprap (D6o = 0.5 ft) <br />NOTES <br />AP. Stage Storage Curve 0.0 <br />Sediment Pond 3 <br />10622 <br />10621 <br />-j 10620 <br />2 <br />C <br />O <br />w 10619 <br />10618 <br />10617 <br />0.00 <br />ELEV <br />(ft) <br />0.40 0.80 <br />Accumulative Storage (Acre -Ft) <br />1.20 <br />Storage volume computations <br />Sediment Pond 3 <br />Width LENGTH AREA AVG. INTERVAL STORAGE ACC. STAGE <br />(ft) (ft) (ac) AREA (ft) (ac -ft) STORAGE INTERVAL <br />10617.00 <br />N/A <br />(106202 00 TRUCTUR <br />10617.50 <br />ZEMERGENCYSPILLWAY <br />N/A <br />10618.00 <br />(10 <br />20.00) <br />25 -YR EVENT NOFF (0.15 AC -FT) <br />10 -YR E RUNOFF (0.07 AC -FT <br />N/A <br />N/A <br />10620.00 <br />PRI <br />N OU <br />CIPAL SPILLWAY (1061 <br />LEVEL (10617.50) <br />.00) <br />N/A <br />CL <br />ELEV <br />(ft) <br />0.40 0.80 <br />Accumulative Storage (Acre -Ft) <br />1.20 <br />Storage volume computations <br />Sediment Pond 3 <br />Width LENGTH AREA AVG. INTERVAL STORAGE ACC. STAGE <br />(ft) (ft) (ac) AREA (ft) (ac -ft) STORAGE INTERVAL <br />10617.00 <br />N/A <br />N/A <br />10617.50 <br />N/A <br />N/A <br />10618.00 <br />NIA <br />N/A <br />10619.00 <br />N/A <br />N/A <br />10620.00 <br />NIA <br />N/A <br />10621.00 <br />N/A <br />N/A <br />10622.00 <br />NIA <br />N/A <br />� 7ILI 1 <br />r <br />a3� <br />(ac) <br />Map G-4: Sediment Pond 3 <br />DATE <br />14109111 <br />(ac -ft) <br />(ft) <br />0.0000 <br />Revenue Mine <br />n5m weomHm ^I.... <br />AS SHOM <br />VaiFS, C,1 1111 SMAI WWS-W <br />Star Mine Operations <br />0.0442 <br />0.50 <br />0.0221 <br />0.0221 <br />0.50 <br />0.0883 <br />0.1325 <br />0.50 <br />0.0662 <br />0.0883 <br />1.00 <br />0.1766 <br />0.1867 <br />1.00 <br />0.1867 <br />0.2751 <br />2.00 <br />0.1969 <br />0.2075 <br />1.00 <br />0.2075 <br />0.4825 <br />3.00 <br />0.2180 <br />0.2293 <br />1.00 <br />0.2293 <br />0.7118 <br />4.00 <br />0.2405 <br />0.2521 <br />1.00 <br />0.2521 <br />0.9638 <br />5.00 <br />0.2637 <br />� 7ILI 1 <br />r <br />a3� <br />Map G-4: Sediment Pond 3 <br />DATE <br />14109111 <br />Greg Lewicki And Associates <br />Design Details <br />SCALE <br />Revenue Mine <br />n5m weomHm ^I.... <br />AS SHOM <br />VaiFS, C,1 1111 SMAI WWS-W <br />Star Mine Operations <br />