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

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V
Yoast Mine
Pond 012A Design
HYDROLOGIC INPUT PARA>y1ETERS
SEDCAD 4
Channel YPM-6-2
OPTION 2
Watershed ID -Structure 9 - SWS1
Westside Watershed
Sedimentology: k factor
HYDROLOGIC SOIL AREA
SOILS MAP UNIT/SOILS SERIES GROUP k FACTOR (acres)
Reclaimed B 0.32 5.50
Total 5.5
Weighted k Factor 0.32
SEDCAD 4
Channel YPM-6-2
OPTION 2
Watershed ID -Structure 9 - SWS2
Sedimentology: k factor
HYDROLOGIC SOIL AREA
SOILS MAP UNITlSOILS SERIES GROUP k FACTOR (acres)
Reclaimed B 0.32 17.33
53C/D/E/F -Winevada loam B 0.23 2.0
oborolls complex
Ustarthents-C
103 D 0.20 1.0
ry
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Total 20.3
Weighted k Factor 0.31
SEDCAD 4
Channel YPM-6-2A
OPTION 2
Watershed ID -Structure 9 - SWS3
Sedimentology: k factor
HYDROLOGIC SOIL AREA
SOILS MAP UNITlSOILS SERIES GROUP k FACTOR (acres)
Reclaimed B 0'32 6'21
XSDlElF -Winevada -Splitro complex B 0.37 0.6
46ClD -Splitro loam C 0.24 0.9
53ClD/E/F -Winevada loam B 0.23 0.7
Foidel loam
66D/E/F B 0.28 3.3
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Total 11.6
Weighted k Factor 0.30
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.
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TR-37
13-12.1-78
Revised 02/08