2008-12-04_PERMIT FILE - C1994082 ‎(10)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Pond 012 and Pond 012A Two-Pond System Design ‎(Pgs 13-12.1-149 to 13-12.1-225)‎
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.1 Part 2
• Media Type: D
• Archive: No

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Yoast Mine
Pond 012/012A SystEm
~lYDROLOGIC INPUT PAR,~I~'li=T1=RS
SEDCAD4
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% canopy, 80% 0.042 2.29
ground cover
imed
R
l Reclaimed 60% grcund cover 0.042 6.2
ec
a
Total 9.3
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 Soil 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).
TR-37 13-12.1-182 Revised 08/08