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 System
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
Structure 11 -SWS2
Watershed ID: Channel YFN1-22
Sedimentology: k factor
HYDROLOGIC SOIL
SOILS MAP UNIT/SOILS SERIES GROUP k FACTOR AREA (acres)
Reclaimed B 0.32 1.40
Total 1.4
Weighted k Factor 0.32
Soils series information frcm Yoast Mine Permit Application Package {see Tab 9, Soil Baseline Study [Nyenhuis, 1994]).
Hydrologic Soil Group values are approved Yoast values (see Attachment 13-12, Table 13-12.2). The soil erodibility
factor, "k-Factor", values are presented in Attachment 13-12, Table 13-12.2.
SEDCAD 4
Structure 11 - SWS1
Watershed ID: Channel YPM-22
Sedimentology: Control Factor
CONTROL
LAND USE CONDITION COVER TYPE VEGETATION FACTOR AREA (acres)

Undistrubed As enMltn. Erush
p 25% canopy, 80%
ground cover 0.042 8.39
Sagebrush 25% canopy, 80% 0.042 1.62
ground cover
l
i
d
R Reclaimed EO% ground cover 0.042 5.8
a
me
ec Total 15.8
Weighted Control Factor 0.042
SEDCAD 4
Structure 11 -SWS2
Watershed ID: Channel YPM-22
Sedimentology: Control Factor
CONTROL
LAND USE CONDITION COVER TYPE VEGETATION FACTOR AREA (acres)
d
l
i Reclaimed 60% ground cover 0.042 1.4
me
a
Rec
Total 1.4
Weighted Control 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 13-3A.1-A.40 Revised 02/08