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

l~l J
~...J
r/
Yoast Mina
Pond 012/012A System
HYDRflLOGlC IPIPUT P,4f,RA~r1ETERS
Channel YPM-19
;d ID -Structure 6 -
.S MAP UNIT/SOILS HYDROLOGIC SOIL k FACTOR (acre:
SERIES GROUP
32
0
6.20
ned B
C .
0.24 2 1
- Splitro loam 23
0 1.1
'EIF - Winevada loam B . 9.4
Total
Weighted k Factor 0.29
•
TR-37
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.
13-12.1-181
Revised 08!08
Vegetation caver conditions presented in Tab 10, Vegetation, Attachment 10-1, 1990/1992 Vegetation
Baseline Report, Yoast Study Area (ESCO Associates, 1993). Approved Yeast Mine curve numbers are
presented in Attachment 13-12, Postmining Drainage and Sediment Control ,Table 13-12.1. Values were
adapted from Urban Hydrology for Small Watersheds, Technical Release No. 55, Soil Conservation Service,
1986.