2008-12-04_PERMIT FILE - C1994082 ‎(35)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Sediment Ponds SEDCAD4 Results
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.1
• Media Type: D
• Archive: No

•
Yoast Mine.
Pond 012A Design
FIYDROLOGiC IyPUT PARAMETERS
SEDCAD4
Pond 012A
OPTION 2
Watershed ID -Structure 11 -SWS2
Sedimentology: k factor
SOILS MAP UNIT/SOILS
SERIES HYDROLOGIC SOIL GROUP k FACTOR
Pond Surface N/A N/A
Total
Weighted k Factor N/A
N/A
1.5
Soils series information from 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.
Sedimentology: Control Factor CONTROL ARE
VEGETATION FACTOR (acre
LAND USE CONDITION COVER TYPE
Pond Surfacce N/A NIA N/A 1.5
1.5
Total
Weighted C Factor NIA
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 fo
Converation Planning wifh 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).
13-12.1-78E
Revised 02/08
TR-37
SEDCAD4
Pond 012A
OPTION 2
Watershed ID -Structure 11 -SWS2