PERMFILE51370

• Permit No: C1980001
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Center Ridge Permanent Impoundment Info
• Section_Exhibit Name: 4.6 APPENDIX 4.6-O
• Media Type: D
• Archive: No

Civil Software Design -- SEDCAD+ Version 3.1
• Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved.
Filename:
Storm: 2.04
Company Name: P&M Coal Mining Company
A:\CENTER\RIDGE User: WMB
Date: 10-15-1992 Time: 14:32:04
EDNA MINE CENTER RIDGE PERMANENT IMPOUNDMENT
inches, 25 year-24 hour, SCS Type II
Hydrograph Convolution Interval: 0.1 hr
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ELEVATION-AREA-CAPACITY-DISCHARGE TABLE
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J1, B1, 91
CENTER RIDGE
Drainage Area from J1, B1, S1, SWS(s)1: 1016.0 acres
Total Contributing Drainage Area: 1016.0 acres
SW#1: Trickle Tube
SW#2: Emergency Spillway
Elev Stage Area Capacity Discharge
Ift) lac) tac-ft) Icfa)
--------
--------
0.00 -------
-------
0.00 -------
-------
0.01 -----------
-----------
0.00 ----------------------------------------------
----------------------------------------------
0.00
•
'..00 2.00 0.01 0.02 0.00
:.00 4.00 0.03 0.05 0.00
6.00 6.00 0.06 0.14 0.00
8.00 8.00 0.10 0.30 0.00
10.00 10.00 0.13 0.54 0.00
12.00 12.00 0.19 0.86 0.00
14.00 14.00 0.23 1.27 0.00
16.00 16.00 0.23 1.73 0.00
18.00 18.00 0.32 2.27 0.00
20.00 20.00 0.79 3.34 0.00
22.00 22.00 1.13 5.24 0.00
23.00 23.00 1.18 6.40 0.00 Stage of 3W#1
24.00 24.00 1.24 7.60 6.29
26.00 26.00 1.26 10.10 32.74
26.70 26.70 1.27 10.99 43.55 Stage of 3W#2
27.30 27.30 1.28 11.75 79.31
27.40 27.40 1.28 11.88 88.58
27.49 27.49 1.28 12.00 100.05 Peak Stage
27,50 27.50 1.28 12.01 100.82
27.60 27.60 1.28 12.14 112.82
27.70 27.70 1.29 12.26 126.92
28.00 28.00 1.29 12.65 172.64
28.20 28.20 1.29 12.91 206.50
28.70 28.70 1.30 13.56 307.89
i#############i####### #######i######t#####i########t####ti######i####f#########
r 1
App. 4.6-0-10
September 7, 1993