2008-12-04_PERMIT FILE - C1994082 ‎(35)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Sediment Ponds SEDCAD4 Results
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.1
• Media Type: D
• Archive: No

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TR-37
Yoast Nline
Pond 012A Design
I~`r'DRflLOGIC INPUT PARAAJIETER~
SEDCAD 4
Channel YPM-19
_
Watershed ID -Structure 6 - SWS1
Sedimentology: Control Factor
CONTROL AREA
LAND USE CONDITION COVER TYPE VEGETATION FACTOR (acres}

Undistrubed
Aspen/Mtn. Brush 25% canopy, 80%
ground cover 0.042 0.84

Sagebrush 25% canapy, 80% 0.042 2.29
ground cover
i
d
l Reclaimed 60% ground cover 0.042 6.2
me
a
Rec
Total g' 3
Weighted C Factor 0.042
The Control Factor values are approved Yoast Mine values as presented in Attachment 13-12, Table 13-
12.3. The values were originally presented in Renard, et al. (1997) Predicting Sail Erosion by Water. A
Guide to Converation Planning with the Revised Universal Soil Loss Equation (RUBLE); Agricultural
Handbook 703, U.S. Department of Agriculture as reported in Warner et al. (1998) as reported in Warner et
al. (1998).
13-12.1-72
Revised 02!08