PERMFILE104205

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2006
• Section_Exhibit Name: Exhibit 66 TOC and Mine Water Control Plan
• Media Type: D
• Archive: Yes

Table 43E
Watershed Runoff Summary
10-Year, 25-Year and 100-Year - 24-Hour Storm
Area 10-Year 10-Yeaz 25-Yeaz 25-Year 100-Year 100-Year
Pond Watershed (acres) Runoff Discharge Runoff Discharge Runoff Discharge
(acre-feet) (cfs) (acre-feet) (cfs) (acre-feet) (cfs)
MB-1 2 5.16 0.20 2.68
2A 0.41 0.03 0.36
2B O.14 0.01 0.12
2C 0.33 0.02 0.74

MB-3

3 1.8 0.04 0.48
4 1.50 0.09 1.09
4A 0.34 0.01 0.28
4B 0.06 0.01 0.07
SA 3.27 0.07 0.86
SB 0.06 0.00 0.02
SC 0.64 0.05 0.60
SD 2.18 0.05 0.58
SE 0.47 0.02 0.32
6A 0.41 0.01 0.11
6B 0.76 0.05 0.60
6C 3.47 0.18 2.70
7 2.88 0.06 0.76
7A 0.23 0.02 0.23
8AA 2.42 0.05 0.64
8E O.12 0.01 0.12
9BB 2.63 0.06 0.69
9CC 0.42 0.03 0.41
9F 1.14 0.02 0.30
11C 0.12 0.01 0.14
I SA 0.44 0.03 0.41
15B 0.68 0.05 0.63
15C 0.29 0.02 0.24
i5D 2.21 0.09 0.45
ISE 0.34 0.02 0.28
F,xhibit 66 1 Revisedh'ov. 1996 PR07; Revised .lug. l997:NX2?0
Revised Sepr. 1997:LIR225; Revised Dec. 1997 hIR233, Revised Dec. /999 TR86