2011-07-01_PERMIT FILE - C1982057 ‎(7)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 7/1/2011
• Doc Name: Pond 016 Spillway Certifiation
• Section_Exhibit Name: Tab 13 Attachment 13-5F Appendix 1
• Media Type: D
• Archive: No

SENECA II West Coal Mine
Pond 016 System
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 3 - SWSS
Watershed ID:
S3-SVVS5
Watershed Area:
2.5 acres
Curve Number:
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Pond Area 100 2.5
Total 2.5
CURVE NUMBER 100
Soil Erodability Factor (K):
SOIL TYPE AREA (acres) K FACTOR K*AREA
Disturbed 2.5 0.16 0.4
Wei hied K Factor 0.16
Control Factor:
SOIL TYPE AREA (acres) C FACTOR C*AREA
Disturbed 2.5 1 2.5
Wei hied C Factor 1.00
Practice Factor:
SOIL TYPE AREA (acres) P FACTOR P*AREA
Disturbed -Topsoil
Stripped
2.5
0.9
2.3
Wei hied P Factor 0.90
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TR-56 13-5F-A.26 Revised 09/06