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Copyright (C}v}~8~o~'~.~~re PamePa J. ScFiwa6+ V&~~iiig~£s reserved. <br />Company Name: Peabody Coal Company <br />Filename: C:\SEDCAD3\008\008-10A User: RJG • <br />Date: 08-20-1991 Time: 08:52:44 <br />SENECA MINE POND 008 SPILLWAY REVISION (lOYR.-24HR.STORM) <br />Storm: 1.60 inches, 10 year-24 hour, SCS Type II <br />Hydrograph Convolution Interval: 0.2 hr <br />------------------------------------------- <br />------------------------------------------- <br />ELEVATION-AREA-CAPACITY-DISCHARGE TABLE <br />------------------------------------------- <br />------------------------------------------- <br />J1, B1, S2 <br />POND 008 <br />Drainage Area from J1, B1, S2, SWS(s)1-2: 227.4 acres <br />Total Contributing Drainage Area: 340.9 e,cres <br />SW#1: Perforated Riser <br />SW#2: Emergency Spillway <br />Elev Stage Area Capacity Discharge <br /> <br />-------- (ft) <br />------ (ac) <br />------- (ac-ft) <br />---------- (cfs) <br />------------ <br />------------------------------------ <br />-------- <br />7002.0 ------ <br />0.0 ------- <br />0.0 ---------- <br />0.00 ------------ <br />0.00 ------------------------------------ <br />Top of Sediment Storage (0 Stagel <br />7002.5 0.5 0.1 0.01 0.00 <br />7003.0 1.0 0.1 0.05 0.00 <br />7003.5 1.5 0.2 0.12 0.00 <br />7004.0 2.0 0.2 0.22 0.00 • <br />7004.5 2.5 0.3 0.36 0.00 <br />7005.0 3.0 0.4 0.55 0.00 <br />7005.5 3.5 0.5 0.79 0:00 <br />7006.0 4.0 0.6 1.08 0.00 <br />7006.5 4.5 0.7 1.42 0.00 <br />7007.0 5.0 0.8 1.81 0.00 <br />7007.5 5.5 0.9 2.24 0.00 <br />7008.0 6.0 1.0 2.72 .0.00 <br />7008.5 6.5 1.1 3.24 0.00 <br />7009.0 7.0 1.2 3.81 0.00 <br />7009.5 7.5 1.3 4.42 0.00 <br />7010.0 8.0 1.4 5.08 0.00 <br />7010.5 8.5 1.4 5.78 0.00 <br />7011.0 9.0 1.5 6.51 0.00 <br />7011.5 9.5 1.6 7.29 0.00 Low Orifice of SW#1 <br />7012.0 10.0 1.8 8.13 0.41 <br />7012.5 10.5 1.8 9.04 0.58 <br />7013.0 11.0 1.9 9.98 0.71 <br />"r 013.5 11.5 2.0 10.95 0.82 <br />7014.0 12.0 2.0 11.96 0.92 <br />7014.-I 12.4 2.1 12.80 0.99 Peak Stage <br />7014.5 12.5 2.1 13.01 1.00 <br />7015.0 13.0 2.2 14.09 1.09 Stage of SW#1 <br />7015.5 13.5 2.3 15.22 6.89 <br />7016.0 14.0 2.4 16.38 15.13 Stage of SW#2 <br /> <br />7016.5 <br />14.5 <br />2.5 <br />17.59 <br />18.53 • <br />7016.7 14.7 2.5 18.08 42.61 <br />7016.8 14.8 2.5 18.33 #9.91 <br />7016.9 14.9 2.5 18.58 57.84 <br />7017.0 15.0 2.5 18.83 66.38 <br />7017.5 15.5 2.6 20.12 123.76 <br />7018.0 16.0 2.7 21.-{5 190.08 <br />