PERMFILE66502

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 9/12/2006
• Doc Name: As-Built Report Sediment Pond 002
• Section_Exhibit Name: Tab 07 Appendix 7-6a.1
• Media Type: D
• Archive: No

I ~ Certification Statement
The impoundment and associated structures are pre-existing. The design as-
built drawings and sedimentology discussion have been prepared under the
supervision of others. The structure named herein has been constructed as
shown on Exhibit 7-8, Wadge Impoundment #002 and Cross-Section, which was
certified by Ronald J. Gehrke, a registered professional engineer in the State
of Colorado experienced in the design and construction of earthen structures.
I am a registered professional engineer in the State of Colorado experienced in
the design, construction and operation of earthen structures. I have reviewed
the as-built documents and inspected the site. It is in my opinion, based on
the original assumptions presented in Appendix 7-6a and the as-built data, that
Pond 002 will meet the requirements of Rules 4.05.6(3)(a), 4.05.9 (2)(b) and
4.06.9(2)(c)(ii).
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TR-37 Revised 04/05