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I <br />Sediment Pond 3 Spillway Designs <br />Principal Spillway <br />Emergency Spillway <br />Sedimen <br />Pond 3 <br />"d <br />Top of Pond <br />/ Spillway <br />10 <br />2% grade <br />Baseline Topography 1 <br />Collars <br />0.50 ft. 0.50ft. Freeboard <br />1� 2� T <br />-I1.0 ft. <br />Trapezoidal Channel <br />Equal Side Slopes <br />Channel Lining: Grouted riprap (Do = 0.5 ft) <br />NOTES <br />Embankment material fill and <br />compaction specifications can be <br />found on Map G -6 <br />Hydraulic calculations are in Table <br />6 -1 in Appendix 6. <br />AP. Stage Storage Curve 0.0 <br />Sediment Pond 3 <br />10622 <br />10621 <br />10620 <br />C <br />O <br />w 10619 <br />10618 <br />10617 <br />0.00 0.40 0.80 1.20 <br />Accumulative Storage (Acre -Ft) <br />Storage volume computations <br />Sediment Pond 3 <br />ELEV. Width LENGTH AREA AVG. INTERVAL STORAGE ACC. STAGE <br />(k) (ft) (ft) (ac) AREA (ft) (ac-ft) STORAGE INTERVAL <br />(ac) (ac -ft) (ft) <br />10617.00 N/A N/A 0.0000 <br />10617.50 N/A N/A 0.0883 0.0442 0.50 0.0221 0.0221 0.50 <br />10618.00 N/A N/A 0.1766 0.1325 0.50 0.0662 0.0883 1.00 <br />10619.00 N/A N/A 0.1969 0.1867 1.00 0.1867 0.2751 2.00 <br />10620.00 NIA NIA 0.2180 0.2075 1.00 0.2075 0.4825 3.00 <br />10621.00 NIA N/A 0.2405 0.2293 1.00 0.2293 0.7118 4.00 <br />10622.00 NIA N/A 0.2637 0.2521 1.00 0.2521 0.9638 5.00 <br />e <br />C. < %® <br />793b" <br />M -ao�a v3 �, I �l3 Ji�3 <br />Map G -4: Sediment Pond 3 <br />Design Details <br />Revenue Mine <br />Star Mine Operations <br />DATE <br />TOP OF STRUCTURE <br />(10622.00) <br />121M1, <br />SCALE <br />AS SHOWN <br />EMERGENCY SPILLWAY (1 <br />20.00) <br />(0.21 AC -FT) <br />100 -YR EVENT RrNOFF(0.07AC-FT <br />25 -YR EVENT 0.15 AC -FT) <br />10 -YR E R <br />II., WaM C-4 PnuelaSXia95f5a <br />PW W, CO UAW138 E MtlI.MbQld�iti.bz <br />PRINC <br />OU <br />IP <br />LE <br />L SPILLWAY (1061 <br />EL (10617.50) <br />.00) <br />KAN <br />Map G -4: Sediment Pond 3 <br />Design Details <br />Revenue Mine <br />Star Mine Operations <br />DATE <br />121M1, <br />SCALE <br />AS SHOWN <br />� Greg Lewicki And Associates <br />x <br />cl <br />II., WaM C-4 PnuelaSXia95f5a <br />PW W, CO UAW138 E MtlI.MbQld�iti.bz <br />Map G -4: Sediment Pond 3 <br />Design Details <br />Revenue Mine <br />Star Mine Operations <br />