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 Powderhom's Permit No. C-81-041, revisions and new
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 new date
of December 16, 1996, to be consistant with other submissions, although ,many of the sheets
have a subsequent date.
I, Larry M. Reschke, PE 19691, hereby certify that the following pages in Appendix 13-1
dated (New 12/16/96) 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 lmowledge
and belief:
13-1-2 thru 13-1-15b
13-1-39 thru 13-1-93
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13-1-1 (New 12/16/96)