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

Watershed 1D:
S3-SWS3
SEDCAD 4
WATERSHED ID
Structure 3 -SWS3
Watershed Area:
Curve Number:
SENECA II West Coal Mine
Pond 016 System
HYDROLOGIC INPUT PARAMETERS
9.4 acres
WATERSHED TYPE: COVER SOIL GROUP NUMBER (acres)
Sa ebrush Good(>70% D 55 3.6
Aspen/Mountain Brush Good(>70%) D 48 5.8
Total 9.4
CURVE NUMBER 51
Soil Erodability Factor (K):
SOIL TYPE AREA (acres) K FACTOR K*AREA
Winevada-Splitro
Complex
2.8
0.37
1.0
Aeber Cla 2.6 0.28 0.7
Roxal Variant 4.0 0.28 1.1
9.4
Weighted K Factor 0.31
Control Factor:
SOIL TYPE AREA (acres) C FACTOR C'AREA
Sa ebrush 3.6 0.042 0.2
Aspen/Mountain Brush 5.8 0.042 0.2
9.4
Wei
hted CP Factor
0.042
Practice Factor:
SOIL TYPE AREA (acres) P FACTOR P*AREA
Undisturbed 9.4 1 9.4
Weighted CP Factor 1.00.
•

TR-5fi 13-5F-A.24 Revised 09/06