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-1
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 1 -SWS1
Watershed W-1
Watershed Area:
421.6
Curve Number:
VEGETATION HYDROLOGIC CURVE AREA
WATERSHED TYPE COVER SOIL GROUP NUMBER (acres)
Aspen/Mountain Brush Good (>70%) C 41 252.66
Aspen/Mountain Brush Good (>70%) D 48 34.09
Herbaceous Good (>70%) D 85 18.15
Mesic Drainage Fair (30%<x<70%) C 81 4.89
Sagebrush Good (>70%) C 47 37.36
Sagebrush Good (>70%) D 55 4.08
Rock Outcrop Bare D 98 3.27
Reclaimed Fair (30%<x<70%) B 71 14.58
Haul Road Bare C 91 52.56
Total 421.6
CURVE NUMBER 52
SEDCAD 4
WATERSHED ID
Structure 1 -SWS1
Watershed W-1
Watershed Area:
421.6
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 0.28 0.042 252.66
Aspen/Mountain Brush Good (>70%) D 0.20 0.042 34.09
Herbaceous Good (>70%) D 0.19 0.043 18.15
Mesic Drainage Fair (30%<x<70%) C 0.28 0.100 4.89
Sagebrush Good (>70%) C 0.37 0.042 37.36
Sagebrush Good (>70%) D 0.20 0.042 4.08
Rock Outcrop Bare D 0.1 1.0 3.27
Reclaimed Fair (30%<x<70%) B 0.16 0.043 14.58
Haul Road Bare C 0.16 1,0 52.56
Total 421.6
0.26 0.17

TR-30 13-3A-A.18 Revised 11/06