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t <br />,.. <br />r~r ~.. <br />I~. <br />r, <br />i <br />t,. <br />FILL PLACEMENT <br />Fill #7, March 30, 2004 <br />Page 2 <br />CDMG regulations require that spoil be "placed in horizontal lifts in a controlled manner, concurrently <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 ft. <br />with leveling and compactive effort supplied by dozers and trucks was utilized as fill placement advances to <br />within fifty feet of the slope face. No fill placement occurred during this quarter. <br />COVER MATERIAL <br />As documented by previous inspection reports, cover placement, seeding and mulching occurred during 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 in 2002 and the lateral ditch placed at the upper perimeter of fill 7. <br />STRUCTURAL INTEGRITY <br />The entire excess spoil fill facility was examined for signs of failure and instability such as tehsion cracks, <br />ground movement, springs and seeps, and standing water. No indication of potential instability was <br />observed. <br />'DOCUMENTATION AND OTHER OBSERVATIONS <br />Seasonal precipitation resulted in germination of the seed-mix broadcasted during the third quarter 2002. <br />Vegetation density is light, but appears to be wide-spread across the fill area. No significant erosion was <br />noted. Established drainage appears to be functioning as designed. <br />CERTIFICATION <br />Inspection was conducted by Ronald G. Thompson, a qualified professional and MSHA certified inspector <br />of earth and rock-fill embankments and impoundments, under the direction of Mr. Charles McGlothlin, a <br />registered professional engineer licensed in the Slate of Colorado. <br />This 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 during this inspection and by discussions with mine <br />personnel, is in accordance with designs as proposed by CTL Thompson in their report dated April 27 and <br />amended July 27, 2001 and as approved by the Division of Minerals and Geology. <br />:. ' <br />r` , <br />Ronald G. Thompson yf/~ /~ <br />Inspector l C.l~ <br />~,. <br />.' n ~ GL9 Ty ". - <br />w ~ .~~c C~~': <br />Charles . M Glothlin ..t-t; ;,n~ 'y> <br />Professional Engineer ~p/~~' -~ <~,' _;> ~` <br />Inspections wmple[ed in compliance with Rule 4.09.1(11)(6) must be submitted to the Division within two weeks of completion. '~, _r'~?r , <br />