PERMFILE54870

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 9/28/2007
• Doc Name: 10 Year, 24 Hour SEDCAD Modeling
• Section_Exhibit Name: Tab 07 Appendix 7-6f.3 Addendum 7-6f.3A
• Media Type: D
• Archive: Yes

SENECA II MINE
Pond 008
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 1 - SWS1
Pond 008 Subwatershed 1
Watershed Area:
7.3
Curve Number:
VEGETATION HYDROLOGIC CURVE AREA
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Sagebrush Fair (30 - 70%) D 70 6.8
Reclaimed Good {>70%) B 62 0.5
Total 7.3
CURVE NUMBER 69
SEDCAD 4
WATERSHED ID
Structure 1 - SWS2
Pond 008 Subwatershed 2
Watershed Area:
18.4
Curve Number:
VEGETATION HYDROLOGIC CURVE AREA
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Sagebrush Fair (30 - 70%) D 70 7.4
Reclaimed Good (>70%) B 62 10.95
Total 18.4

CURVE NUMBER 65
SEDCAD 4
WATERSHED ID
Structure 1 - SWS3
Pond 008 Subwatershed 3
Watershed Area:
1.6
Curve Number:
VEGETATION HYDROLOGIC CURVE AREA
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Pond Surtace n/a n/a 100 1.58
Total 1.6
CURVE NUMBER 100

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J
TR-42 7-6f.3A-16 Revisetl 09/07