PERMFILE56184

• Permit No: C1981041
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Doc Name: A-1 Roadway Drainage & Cross-Drainage Culvert Calculations
• Section_Exhibit Name: TAB 13 Appendix 13-1
• Media Type: D
• Archive: No

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POWDERHORN COAL COMPANY
Midterm Roadway Drainage Calculations
Certification
As part of the Midterm review of Powderhorn's Permit No. C-81-041, revised drainage design
were necessary for several locations. These calculations were prepared using Sedcad 3 and
assumptions stated within the calculations. These new pages have a Revised date of July 16,
1997.
I, Larry M. Reschke, PE 19691, hereby certify that the following pages in Appendix 13-1
dated (Rev. 7/16/97) have been prepared by myself or under my direct supervision, and that
the information contained in the calculations is true and correct to the best of my knowledge
and belief:
13-1-3 thru 13-1-7
13-1-41
13-1-1a (New 7/16/97)
y