2008-12-04_PERMIT FILE - C1994082 ‎(15)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: 10 Year 24 Hour SEDCAD Demonstration
• Section_Exhibit Name: Tab 13 Attachment 13-19.1 Appendix 13-19.1-A
• Media Type: D
• Archive: No

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TR-37
Yoast Mine
Pond 011 Permanent Feature Demonstration
HYDROLOGIC INPUT PARAMETERS
SEDCAD4
Channel YPM-13
Watershed ID -Structure 2 - SWS1
Sedimentology: Control Factor
CONTROL AREA
LAND USE CONDITION COVER TYPE VEGETATION FACTOR (acres)
Undistrubed Aspen/Mtn. Brush 25% canopy, 80% 0.042 0.18
ground cover
Reclaimed Reclaimed 60% ground cover 0.042 26.1
Total 26.3
Weighted Control Factor 0.042
The Control Factor values are approved Yoast Mine values as presented in Attachment 13-12, Tabfe 13-12.3. The
values were originally presented in Renard, et al. (1997) Predicting Soi! 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).
13-19.1-A.13
Revised 08108