PERMFILE120404

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 6/1/2007
• Doc Name: Isolines of R Factor for Western U.S.
• From: 10 Year 24 Hour SEDCAD Demonstration
• Section_Exhibit Name: Tab 13 Attachment 13-3A Addendum 13-3A-1 & Addendum 13-3A-A
• Media Type: D
• Archive: Yes

YOAST MINE
Pond 10 -Watershed W-20
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 5 - SWS1
Watershed - W-20 (YPM-20)
Watershed Area:
17.0
Curve Number:
VEGETATION HYDROLOGIC CURVE AREA
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Aspen/Mountain Brush Good (>70%) C 41 5.58
Sagebrush Good (>70%) C 47 1.54
Spoil Bare C 86 9.92
Total 17.0
CURVE NUMBER 68
SEDCAD 4
WATERSHED ID
Structure 5 - SWS1
Watershed W-20 (YPM-20)
Watershed Area:
18.4
Sedimentology
k Factor and Control Factor:
VEGETATION HYDROLOGIC k CONTROL AREA
WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres)
Aspen/Mountain Brush Good (>70%) C 0.37 0.042 5.58
Sagebrush Good (>70%) C 0.19 0.042 1.54
Spoil Bare C 0.16 1.0 9.92
Total 17.0
0.23 0.60

TR-30 13-3A-A.22 Revised 11/06