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Certification Statement <br />The impoundment and associated structures are pre- existing with the exception <br />of the principal spillway which is an 18 -inch straight pipe with a 6 -inch <br />opening. The original design, as -built plans and modifications were prepared <br />under the supervision of others. The structure named herein has been <br />constructed as shown on Exhibit 7 -11, Northwest Impoundment #003, with the <br />exception of the principal spillway, which was certified by Ronald J. Gehrke, a <br />registered professional engineer in the State of Colorado experienced in the <br />design and construction of earthen structures. Figure 7 -6B.1, Pond 003 <br />Principal Spillway As- Built, presents the existing configuration of the <br />principal spillway. All other details are as previously shown on Exhibit 7 -11. <br />I am a registered professional engineer in the State of Colorado experienced in <br />the design, construction and operation of earthen structures. I have reviewed <br />the as -built documents and inspected the site. It is in my opinion, based on <br />the original design assumptions presented in Appendix 7 -6b and the as -built <br />data, that Pond 003 will meet the requirements of Rules 4.05.6(3)(a), <br />y 4.05.9(2)(b) and 4.05.9(2)(c)(ii). <br />O (; E SH't <br />�m2 l <br />3 <br />X - 4lze /o� <br />W. 73 <br />TR -37 Revised 04/05 <br />