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 012/012,4 System
H`(DROLOGIC INPUT P,4RAf~tETERS
SEDCAD 4
Channel YPM-6-1
Watershed ID -Structure 7 - SWS2
Sedimentology: k factor AREA
HYDROLOGIC SOIL
SOILS MAP UNIT/SOILS SERIES GROUP k FACTOR (acres)
g 0.32 20.50
Reclaimed
B
0.37 1 7
;CBD/E!F -Winevada -Splitro complex
C 0.24 1.6
46CJD -Splitro Icam
23
0
4.1
53ClDlE/F -Winevada loam B . 27 8
Total
Weighted k Factor 0.31
Soils series information from Yoast Mine Permit Application Package (see Tab 9, Soil Baseline Study [Nyenhuis,
19940. Hydrologic Soil Group values are approved Yoast values (see Attachment 13-12, Table 13-12.2). The sail
erodibility factor, "k-Factor', values are presented in Attachment 13-12, Table 13-12.2.
SEDCAD 4
Channel YPM-6-1
Watershed ID -Structure 7 - SWS1
•
Sedimentology: Control Factor CONTROL AREA
LAND USE CONDITION COVER TYPE VEGETATION FACTOR (acres;

Brush
enlMtn
As 25% canopy, 80% 0.042 8.69
Undistrubed .
p ground cover
d
i 60% ground cover 0.042 1.54
Reclaimed me
Recla
8.2
Weighted C Factor _ 0.042
•
13-12.1-184 Revised 08/08
TR-37
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).