PERMFILE50611

• Permit No: C1981041A
• IBM Index Class Name: Permit File
• Doc Date: 10/11/2002
• Doc Name: A-2 Part 1
• Section_Exhibit Name: Tab 13 Appendix 13-2 TOC to pg RSN-51
• Media Type: D
• Archive: Yes

• POWDERHORN COAL COMPANY
Midterm Drainage Control Calculations
Certification
As part of Techinical Revision 12 for Powderhorn's Permit No. C-81-041, a mine water
treatment pond is being proposed for the Roadside North Portals operation area. This
certification covers the new Pond 12 design and a ditch to route surface water around
the pond to Pond 5.
I, Larry M. Reschke, PE 19691, hereby certify that the following pages in Appendix 13-2
dated (New 2/21/97 and Rev. 5/23/97) have been prepared by myself or under my
direct supervision, and that the information contained in the Iculations is true and
correct to the best of my knowledge and belief: ,{
RSN- 29a, and RSN-47 thru 50 A ` ~%~~~?a~~?i~"" ,. "~ P~
ti~1'~- 2q ~ q ~

INFO-8 (Rev. 5/23/97)