2010-05-07_PERMIT FILE - C2009087A ‎(44)‎

• Permit No: C2009087A
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2010
• Doc Name: South Facilities Area Operational Ditch and Culvert Designs pgs TOC to 169
• Section_Exhibit Name: Exhibit 2.05.3-E2 Appendix 2.05.3-E2.G-2
• Media Type: D
• Archive: Yes

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Peabody Sage Creek Mine
Channel PM -1 System
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.G -2.46
Prepared 05/09
SEDCAD 4
WATERSHED ID
Structure 8 - SWS1
Channel PM- 61-owerMiddle
Watershed Area:
85.7
Curve Number:
HYDROLOGIC
CURVE
AREA
WATERSHED TYPE
GROUND COVER
SOIL GROUP
NUMBER
(acres)
Reclaim >3 years
Good ( >70 %)
B
62
85.7
Total
I
1
1 85.7
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.G -2.46
Prepared 05/09