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Fill 7 <br />FILL PLACEMENT <br />December 30, 2005 <br />Page 2 <br />CDMG regulations require that spoil be "placed in horizontal lifts in a controlled manner, concnrrentty <br />compacted as necessary to ensure mass stability". Maximum lift thicknesses are not specified. As indicated <br />by previous inspection reports, lifts were placed in accordance with plans specified by CTL Thompson. <br />Spoil material was transported to the fill area using a combination of trucks and dozers. Left thicknesses of <br />up to 50' were placed within the area removed from the fill face by more than 50 ft. Thinner lifts of 6-8 tt <br />with leveling and compactive effort supplied by dozers and trucks was utilized as fill placement advances to <br />within fifty fiat of the slope face. No fill placement occurred during tlis quarter. <br />CCIVER MATERIAL <br />As documented by previous inspection reports, cover placemenrt, seeding and mulching occurred dining the <br />second quarter 2002. During the first quarter 2004 topsoil was transported to the upper-most portion of the <br />fill area lying between the area seeded hr 2002 and the lateral ditch placed at the upper perimeter of fi117. <br />STRUCTURAL INTEGRITY <br />The entire excess spoil fill facility was examined for signs of failure and instability such as tension cracks, <br />Bound movement, springs and seeps, and standing water. No indication of potential instability was <br />observed. <br />DOCUMENTATION AND OTHER OBSERVATIONS <br />Vegetation density has improved across the fi71 area No significant erosion was noted. Established <br />drrinages appear to be fimctioning as designed. <br />CCRTIFICATION <br />In:>pection was conducted by Ronald G. Thompson, a qualified professional and MSI~TA certified inspector <br />of earth and rock-fill embanlmrents and inrpoundmenis, under the direction of Mr. Charles McGlothlin, a <br />ie73istered professional engineer licensed in the State of Colorado. <br />Ttus is to certify, to the best of my knowledge and belief; that Fill No, 7 construction and placement, as <br />noted since the previous certification and as determined dicing this inspection and by discussions with mme <br />personnel, is in accordance with designs as proposed by CTL Thompson in their report dated Apri127 and <br />amended Jury 27, 2001 and as approved by the Division of Minerals and Geology. <br />~~~ <br />Ronald G. Thompson <br />Inspecmr <br />Charles W.1vlcGlothli <br />Professional Engineer <br />r~` ~ f~S ~'.. <br />`,eT is y`: Vii'. <br />-.. ''apt <br />.,s7•~. Ci~J.~yKs <br />rNr„n „ .. , <br />