2010-05-07_PERMIT FILE - C2009087 ‎(60)‎

• Permit No: C2009087
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2010
• Doc Name: Post Mine Ditch and Culvert Designs pgs 156 to 311
• Section_Exhibit Name: Exhibit 2.05.3-E2 Appendix 2.05.3-E2.H-1
• Media Type: D
• Archive: No

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Peabody Sage Creek Mine
PM -15 System Channel Designs
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 2 - SWS1
Channel PM -15
Watershed Area:
36.3
Sedimentology: k Factor and Control Factor
VEGETATION
HYDROLOGIC
k
CONTROL
AREA
WATERSHED TYPE
COVER
SOIL GROUP
FACTOR
FACTOR
acres)
Reclaimed
Good ( >70 %)
B
0.24
0.043
29.73
Reclaimed
Fair (30 - 70 %)
B
0.29
0.043
6.54
Total
36.3
0.25 0.043
SEDCAD4
WATERSHED ID
Structure 2 - SWS2
Channel PM -15
Watershed Area:
65.6
Sedimentoiogy: k Factor and Control Factor
VEGETATION
HYDROLOGIC
k
CONTROL
AREA
WATERSHED TYPE
COVER
SOIL GROUP
FACTOR
FACTOR
(acres)
Reclaimed
Good ( >70 %)
B
0.24
0.043
16.07
Reclaimed
Fair (30 - 70 %)
B
0.29
0.043
49.53
Total
65.6
0.28 0.043
The soil erodibility factor, "k- Factor", values are based on Seneca II soil survey information (see Tab 9, Exhibit 9 -1, Soil
Type and Sampling Locations, and Attachment 9 -6 of the Seneca II Mine PAP) as presented in Soils of Colorado, Loss
Factors and Emdibllity, Soil Conservation Service, 1983.
The Control Factor values are adapted from Seneca Coal Company mine permit application packages. They are
representative of regional conditions and previously approved by CDRMS in the Seneca II Mine PAP, Permit C -80 -003.
The values are adapted from Renard, et al. (Renard, K.G., Foster, G.R., Weesies, G.A., McCool, D.K., and D.C. Yoder,
coordinators, 1996. Predicting Soil Erosion by Water. A Guide to Converation Planning with the Revised Universal Soil
Loss Equation (RUSLE) . Agricultural Handbook 703. U.S. Department of Agriculture.
2.05.3 -E2.H -194
Revised 12/09