PERMFILE131211

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 1/11/2007
• Doc Name: Pond 016 Spillway Certifiation
• Section_Exhibit Name: Tab 13 Attachment 13-5F Appendix 1
• Media Type: D
• Archive: Yes

SENECA II West Coal Mine
SEDCAD 4
WATERSHED ID
Structure 4 - SWS1
u
TR-56
Watershed ID:
S4-SWS1
Watershed Area:
Curve Number:
Pond 016 System
HYDROLOGIC INPUT PARAMETERS
1.7 acres
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Pond Area 100 1.7
Total 1.7
CURVE NUMBER 100
Soil Erodability Factor (K):
SOIL TYPE AREA (acres) K FACTOR K*AREA
Disturbed 1.7 0.16 0.3
Wei hted K Factor 0.16
Control Factor:
SOIL TYPE AREA (acres) C FACTOR C*AREA
Disturbed 1.7 1 1.7
Wei hted C Factor 1.00
Practice Factor:
SOIL TYPE AREA (acres) P FACTOR P*AREA
Disturbed -Topsoil
Stripped
1.7
0.9
1.5
Wei hted P Factor 0.90
73-5F-A.27
Revised 09/06