2010-05-07_PERMIT FILE - C2009087 ‎(59)‎

• Permit No: C2009087
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2010
• Doc Name: Post Mine Ditch and Culvert Designs pgs TOC to 155
• Section_Exhibit Name: Exhibit 2.05.3-E2 Appendix 2.05.3-E2.H-1
• Media Type: D
• Archive: No

Peabody Sage Creek Mine
PM -1 System Channel Designs
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 15 - SWS1
Haul Road Ditch RE -D1
Postmine Desion
Watershed Area:
10.0
Curve Number:
HYDROLOGIC CURVE AREA
WATERSHED TYPE GROUND COVER SOIL GROUP NUMBER (acres)
Reclaim >3 years Good ( >70 %) B 62 10.00
Total 10.0
CURVE NUMBER 62
•
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.39
Revised 12/09