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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TR-37
Yoast Mine
Pond 012/012A System
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
Channel YPM-6-2
Watershed ID -Structure 9 - SVVS1
Westside Watershed

Sedimentology: k factor
HYDROLOGIC SOIL AREA
SOILS MAP UNITISOILS SERIES GROUP k FACTOR (acres)
B 0.32 5.50
Reclaimed
Total 5.5
Weighted k Factor 0.32
SEDCAD 4
Channel YPM-6-2
Watershed ID -Structure 9 - SWS2
Sedimentology: k factor
AREA
HYDROLOGIC SOIL
SOILS MAP UNIT/SOILS SERIES GROUP k FACTOR (acres)
Reclaimed B 0.32 17.33
53C/D/EfF -Winevada loam B 0'23 2.0
l D 0.20 1.0
ex
103 - Ustorthents-Cryoborolls comp
Total 20.3
Weighted k Factor 0.31
SEDCAD 4
Channel YPM-6-2A
Watershed ID -Structure 9 - SWS3
Sedimentology: k factor
AREA
HYDROLOGIC SOIL
SOILS MAP UNITlSOILS SERIES GROUP k FACTOR (acres)
Reclaimed B 0'32
37
0 6.21
0.6
X8D1E/F -Winevada - Splitro complex B .
46ClD - Splitro loam C 0.24 0.9
53C1D/E!F -Winevada loam B 0'23 0.7
B 0.28 3.3
66DlElF - Foidel loam 11.6
Total
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.
SEDCAD 4
Channel YPM-6-2
Watershed ID - Stru SWS1
Sedimentology: Control Factor
CONTROL AREA
LAND USE CONDITION COVER TYPE VEGETATION FACTOR (acres)
Reclaimed Reclaimed 60% ground cover 0.042 4.51
Reclaimed Bare 1.0 1.03
Total 5.5
Weighted C Factor 0.220
13-12.1-188
Revised 08!08