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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SENECA II MINE
PM -15 System Channel Design
HYDROLOGIC INPUT PARAMETERS
Peabody Sage Creek Mine curve number (CN) values are based on CN values previously approved by CDRMS for the
Seneca II Mine, Permit C -80 -003. The CN values are presented in the Seneca II Mine PAP in Appendix 7 -12, Postiming
Drainage Control. Values are adapted from Urban Hydrology for Small Watersheds, Technical Release No. 55 (TR -55),
Soil Conservation Service, 1986.
2.05.3 -E2. H.193
Revised 12/09
SEDCAD 4
WATERSHED ID
Structure 1 - SWS1
Channel PL -1 Watershed
Watershed Area:
16.2
Curve Number:
VEGETATION
HYDROLOGIC
CURVE
AREA
WATERSHED TYPE
COVER
SOIL GROUP
NUMBER
(acres
Reclaimed
Fair (30 - 70 %)
B
71
16.2
Total
16.2
CURVE NUMBER
71
Peabody Sage Creek Mine curve number (CN) values are based on CN values previously approved by CDRMS for the
Seneca II Mine, Permit C -80 -003. The CN values are presented in the Seneca II Mine PAP in Appendix 7 -12, Postiming
Drainage Control. Values are adapted from Urban Hydrology for Small Watersheds, Technical Release No. 55 (TR -55),
Soil Conservation Service, 1986.
2.05.3 -E2. H.193
Revised 12/09