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supervised and certified by Robert J. Shevling, Colorado Registered <br />Professional Engineer, No, 37382. <br />I am a registered professional engineer in the State of Colorado experienced <br />in the design, construction and operation of earthen structures. I have <br />reviewed the as-built documents and inspected the site. Exhibit 7-17E, Pond <br />008 Principal Spillway Replacement As-Built, presents the existing <br />configuration o£ the pond. TR-42 presents revised sediment storage capacity <br />calculations that use the existing, as-built configuration. It is in my <br />opinion, based on the design assumptions presented in Appendix 7-6e and the <br />2005 as-built data, that Pond 008 will meet the requirements of Rules <br />4.05.6(3)(a), 9.05.9(2)(b) and 4,05.9(2)(c)(ii) <br />~~~~~~~~0 IIIRI~ <br />Off: '•P ~•Her• • . Tt~ ~~ <br />_ :~ _ <br />Q ~• <br />-0{°18406Ae~ <br />%o: ~\ <br />//~ss ~~u )Ai m~`~~\\\ <br />David A. Hettinger, CO P.E. 18906 Date <br /> <br />TR-92 ~ 6 Revised 09/07 <br />