2008-12-04_PERMIT FILE - C1994082 ‎(2)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: 10 Year, 24 Hour Postmine SEDCAD Demonstration
• Section_Exhibit Name: Tab 13 Attachment 13-3A.1 Appendix 13-3A.1-A
• Media Type: D
• Archive: No

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YOAST MINE
Pond 10 -Watershed W-8
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
Structure 6 - SWS1
Watershed W-8 (YPM-8)
Sedimentology: Control Factor
CONTROL
LAND USE CONDITION COVER TYPE VEGETATION FACTOR AREA (acres)
Undistrubed Aspen/Mtn. Brush 25% canopy, 80% • 0.042 3.8
ground cover
Reclaimed Reclaimed 60% ground cover 0.042 23.3
Total 27.1
Weighted k Factor 0.042
The Control Factor values are approved Yoast 14iine values as presented in Attachment 13-12, Tabie 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 Handbcok 703, U.S. Department of
Agriculture as reported in Warner et al. (1998) as reported in Warner et al. (1998).
TR-37
13-3A.1-A.33
Revised 02108