2008-05-05_PERMIT FILE - C1980001A

• Permit No: C1980001A
• IBM Index Class Name: Permit File
• Doc Date: 5/5/2008
• Section_Exhibit Name: 4.6 Hydrologic Balance Control Plan
• Media Type: D
• Archive: Yes

• TABLE 4.6-22 - Curve Numbers in Mining and Reclamation Sequence
Hydrologic Soil Group B
Year After Mining Land Condition Curve Number
I Pasture Contoured - Fair 59
2 - 4 Pasture Contoured - Poor 67
3+ Pasture Contoured - Fair 59
Hydrologic Soil Group C
Year After Mining Lond Condition Curve Number

I Pasture Contoured -Fair 75
2 Pasture Contoured - Poor 81
3 - 4 Pasture Contoured - Fair 75
5+ Pasture Contoured - Good 70
I Pasture -Fair 79
•
2 Pasture -Poor 86
3 - 4 Pasture -Fair 79
5+ Pasture -Good 74
r 1
LJ
Revised 7-81 4.6-73