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CERTIFICATION <br />On January 12, 1993 I reviewed the as-built survey of the 002 <br />Landfill Area Pond to determine its compliance with CMLRD Rule <br />4.05.6(3)(d) requiring that this pond be fitted with two separate <br />spillways separated by an elevation difference of at least one <br />foot. <br />I am a registered Professional Engineer in the State of Colorado <br />and am experienced in the design and supervision of earthen <br />construction. I have reviewed the certified survey of this <br />structure performed by Peter Epp (Colorado P.L.S. No. 14815) on <br />December 22, 1992. I have also reviewed the previous as-built <br />certification by Jerry E. Snider (Colorado P.E. No. 17570) dated <br />April 14, 1986. In addition to the above, I have discussed the <br />modification made in 1992 with Juan. P. Garcia who supervised the <br />actual modification. This modification to bring this structure in <br />compliance with CMLRD Rule 4.05.6(3)(d) was to lower one of two <br />existing 12" CMP spillways to an elevation approximately 1.2' below <br />the other. One 12" CMP is now the primary spillway and the other <br />12" CMP is now the emergency spillway. <br />I hereby certify this modification as bringing this structure into <br />compliance with CMLRD Rule 4.05.6(3)(d). <br />__~ <br />Robert G. Trumbly, Jr. <br />Colorado P.E. No. 16957 <br />/-~~-9~ <br />Date <br />