PERMFILE68454

• Permit No: C1981071
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 13 SEDCAD RUNS POND M
• Media Type: D
• Archive: No

Civil Software Design -- SEDCAD+ Version 3.1
Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved.
Company Name: CYPRUS YAMPA VALLEY COAL
Filename: D:\SEDCAD3\PONDM\PONDM User: TAVIS ROGERS
• Date: 02-26-1997 Time: 15:42:58
POND M 10 AND 25 YEAR RUN
Storm: 2.20 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, S1
POND M
Drainage Area from J1, B1, S1, SWS(s)1-3: 186.8 acres
Total Contributing Drainage Area: 186.8 acres
SW#1: Perforated Riser
SW#2: Emergency Spillway
Elev Stage Area Capacity Discharge
(ft) (ac) (ac-f t) (cfs)
6811.40 0.00 0.05 0.00
6811.40 0.00 0.05 0.00
6811.50 0.00 0.06 0.01 0.00 Top of Sediment Storage (0 Stage)
6811.90 0.40 0.11 0.03 0.00
2.40 0.90 0.17 0.10 0.00
2.90 1.40 0.24 0.20 0.00
6813.40 1.90 0.30 0.34 0.00
6813.90 2.40 0.36 0.50 0.00
6814.40 2.90 0.42 0.69 0.00
6814.50 3.00 0.43 0.74 0.00 Low Orifice of SW#1
6814.90 3.40 0.47 0.92 0.15
6815.40 3.90 0.53 1.17 0.22
6815.90 4.40 0.58 1.44 0.28
6816.40 4.90 0.63 1.74 0.33
6816.90 5.40 0.68 2.07 0.37
6817.40 5.90 0.74 2.43 0.40
6817.90 6.40 0.80 2.81 0.44
6818.40 6.90 0.86 3.23 0.47
6818.90 7.40 0.92 3.67 0.50
6819.40 7.90 0.99 4.15 0.52
6819.90 8.40 1.06 4.66 0.55
6820.30 8.80 1.11 5.10 0.57 Stage of SW#1
6820.40 8.90 1.13 5.21 0.57
6820.67 9.17 1.12 5.52 3.80 Peak Stage
6820.90 9.40 1.18 5.78 6.59
6821.40 9.90 1.23 6.39 8.92
6821.90 10.40 1.29 7.02 10.76
6822.00 10.50 1.30 7.15 11.09 Stage of SW#2
*******~t**********************~* *********~~~tt*********~**~*~*******~**~~*****
r1
LJ
APPgO'UED ~~~+~ L 1 1991