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Sediment <br />Pond 2 <br />Spil <br />AP. <br />10640 <br />10639 <br />10638 <br />10637 <br />J <br />10636 <br />c <br />o <br />> 10635 <br />a> <br />W <br />10634 <br />10633 <br />10632 <br />10631 <br />0.00 <br />Stage Storage Curve <br />Sediment Pond 2 <br />0.40 0.80 1.20 1.60 <br />Accumulative Storage (Acre -Ft) <br />W <br />- STRUCTURE <br />00) <br />2.00 2.40 <br />Sediment Pond 2 <br />Spillway Designs <br />TOP C I <br />(1064(. <br />Storage <br />volume computations <br />EMERGENCY SPI <br />LWAY (10638.00) <br />Sediment Pond 2 <br />Top of Pond: 10° wide embankement <br />25-YR EVENT RU <br />OFF 0.66 T) <br />Emergency Spillway <br />0 -YR EVENT RU <br />F (0.39 A (:-FT) <br />Width <br />LENGTH <br />AREA <br />D E <br />C <br />1 640' <br />(ft) <br />(ft) <br />(ft) <br />(ac) <br />AREA (ft) <br />(ac -ft) STORAGE INTERVAL <br />E' <br />PRINCIPAL <br />CLEAN OUT LE <br />PILLWAY ( <br />EL (10631. <br />0632. (0) <br />0) <br />(ac) <br />DI <br />IISION OF RECLAMATIC <br />MINING AND SAFETY <br />N, <br />0.40 0.80 1.20 1.60 <br />Accumulative Storage (Acre -Ft) <br />W <br />- STRUCTURE <br />00) <br />2.00 2.40 <br />Sediment Pond 2 <br />Spillway Designs <br />Storage <br />volume computations <br />Sediment Pond 2 <br />Top of Pond: 10° wide embankement <br />Emergency Spillway <br />ELEV. <br />Width <br />LENGTH <br />AREA <br />AVG. INTERVAL <br />STORAGE ACC. STAGE <br />1 640' <br />(ft) <br />(ft) <br />(ft) <br />(ac) <br />AREA (ft) <br />(ac -ft) STORAGE INTERVAL <br />10 38' _ _ 2 %grade -► <br />(ac) <br />(ac-ft) (ft) <br />Principal Spillway (conceptual) <br />• 1 Baseline Topography 1 <br />10632' <br />10626 <br />10631.00 <br />N/A <br />N/A <br />0.0500 <br />0.0841 0.50 <br />0.0421 0.0421 0.50 <br />10631' <br />10631.50 <br />N/A <br />N/A <br />0.1182 <br />0.1524 0.50 <br />0.0762 0.1182 1.00 <br />Seep Collars <br />10632.00 <br />N/A <br />N/A <br />0.1865 <br />0.1959 1.00 <br />0.1959 0.3142 2.00 <br />10633.00 <br />N/A <br />N/A <br />0.2054 <br />0.2151 1.00 <br />0.2151 0.5293 3.00 <br />10634.00 <br />N/A <br />N/A <br />0.2247 <br />02344 1.00 <br />0.2344 0.7637 4.00 <br />Emergency Spillway <br />10635.00 <br />N/A <br />N/A <br />0.2442 <br />0'2542 1.00 <br />0.2542 1.0179 5.00 <br />10636.00 <br />N/A <br />N/A <br />0.2642 <br />0.2745 1.00 <br />0.2745 1.2924 6.00 <br />10637.00 <br />N/A <br />N/A <br />02847 <br />0.2953 1.00 <br />0.2953 1.5877 7.00 <br />FO Freeboard <br />10638.00 <br />N/A <br />N/A <br />0.3059 <br />8.00 <br />0 50 n. -FO <br />1 <br />0.3173 1.00 <br />0.3173 <br />0.3173 50 <br />mfi <br />1� <br />-� <br />10639.00 <br />N/A <br />N/A <br />0.3287 <br />0.3395 1.00 <br />0.33 "4a E 9.00 <br />+r <br />2 22�- <br />10640.00 <br />N/A <br />N/A <br />0.3503 <br />Y�aomn•• ®M <br />C. <br />Trapezoidal Channel <br />cso'iaa "�'" YA <br />Equal Side Slopes <br />a033� <br />oc <br />Channel Lining: Grouted riprap (D50 = 0.5 ft) <br />len <br />_ '2-0 ( Z_ O� Z <br />?,^m,�o• <br />���s,•� <br />xensioxs <br />aY on,a <br />DATE <br />.. '' <br />ap G -3: Sediment Pond 2 <br />NOTES' <br />DRMSAdequacyRespowe <br />BL 12/0.9/12 e� <br />X0911, x Greg Lewicki <br />And Associates Design Details <br />bGO <br />I <br />scaE ^ ' ^�'y�'sa <br />Revenue Mine <br />A66HONM Paxu, . co usA w,se <br />e- dui- Ima'dlaMCkma <br />Star Mine Operations <br />