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
Z:itUGAD 4
WATERSHED ID
Structure 11 - SWS1
Channel PM -16
Area:
31.6
Number:
WATERSHED TYPE GROUND COVER SOIL GROUP
Reclaim >3 years Good ( >70 %) B
Total
CURVE NUMBER
CURVE ARE,
NUMBER (acres
62 1 31.63
31.6
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.34 Prepared 05/09