Laserfiche WebLink
• design and construction of the replacement principal spillway, an 8-inch <br />plastic corrugated straight pipe, approved under TR-37 in October 2005, was <br />supervised and certified by Robert J. Shevling, Colorado Registered <br />Professional Engineer, No. 37382. The TR-42 sediment storage calculations <br />were certified by David A. Hettinger, Colorado Registered Professional <br />Engineer, No. 18406. <br />I am a registered professional engineer in the State of Colorado <br />experienced in the design, construction and operation of earthen <br />structures. I have reviewed the as-built documents and inspected the site. <br />Exhibit 7-12A, Pond 004 Principal Spillway Replacement As-Built, presents <br />the existing configuration cf the pond. TR-51 presents revised watershed <br />area measurements; the base model and all other assumptions remain <br />unchanged from the existing, and previously approved, as-built <br />configuration. It is in my opinion, based on the original design <br />assumptions presented in Appendix 7-6c and the 2005 as-built data, that <br />Pond 004 will meet the requirements of Rules 4.05.6(3)(a), 4.05.9(2)(b) and <br />4.05.9(2)(c)(ii). <br />• \\\\\\\1111 <br />APO . .., ST '% <br />. 26046 <br />' j <br />ANA L ••??C,`?\\\ <br />riillllniiiim\\\\ <br />Mjja-?? '7/ D <br />Mich el W. Ludlow, CO P.E. 26046 Da e <br />• <br />TR-51 6 Revised 09/09