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• Civil Software Design -- SEDCAD+ Version 3.1 <br />Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved. <br />Company Name: P&M Coal Mining Company <br />Filename: A:\WEST\RIDGE User: WMB <br />Date: 10-15-1992 Time: 14:25:13 <br />EDNA MINE WEST RIDGE PERMANENT IMPOUNDMENT <br />Storm: 2.04 inches, 25 year-24 hour, SCS Type II <br />Hydrograph Convolution Interval: 0.1 hr <br />------------------------------------------- <br />------------------------------------------- <br />ELEVATION-AREA-CAPACITY-DISCHARGE TABLE <br />------------------------------------------- <br />------------------------------------------- <br />J1, B1, S1 <br />WEST RIDGE <br />Drainage Area from J1, B1, S1, SWSIs)1: 918.7 acres <br />Total Contributing Drainage Area: 918.7 acres <br />SW#1: Trickle Tube <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 />0.00 ------ <br />0.00 ------- <br />0.09 ----------- <br />0.00 ------------ <br />0.00 ----------------------------------- <br />'.00 1.00 0.16 0.12 0.00 <br />..00 2.00 0.26 0.33 0.00 <br />3.00 3.00 0.48 0.69 0.00 <br />4.00 4.00 0.79 1.31 0.00 <br />5.00 5.00 0.98 2.20 0.00 <br />6.00 6.00 1.21 3.29 0.00 <br />7.00 7.00 1.68 4.73 0.00 <br />8.00 8.00 1.93 6.53 0.00 <br />9.00 9.00 1.98 8.49 0.00 Stage of SW#1 <br />10.00 10.00 2.04 10.50 6.29 <br />11.00 11.00 2.09 12.56 17.77 <br />12.00 12.00 2.15 14.68 32.74 Stage of SW#2 <br />12.57 12.57 2.15 15.93 68.38 Peak Stage <br />12.60 12.60 2.18 15.98 69.96 <br />12.'0 12.70 2.19 16.20 79.40 <br />12.80 12.80 2.20 16.42 91.75 <br />12.90 12.90 2.20 16.64 103.83 <br />13.00 13.00 2.21 16.86 117.95 <br />13.50 13.50 2.23 17.97 195.71 <br />14.00 14.00 2.26 19.10 291.24 <br />############## ####### ##############i##i#i###i#######################iii######Y# <br /> <br />App. 4.6-N-10 <br />September 7, 1993 <br />