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I'ill7 <br />September 30. 2004 <br />Page 2 <br />FILL PLACEMENT <br />CDMG regulations require that spoil be "placed in horizontal lilts in a controlled manner, concun~ently <br />compacted as necessary to ensure mass stability". Maximum IiR 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. Lela thicknesses of <br />up to 50' were placed within the area removed from the fill face by more than 50 fi. Thinner lifts of C-8 ft. <br />with leveling and compactive effort supplied by dozers and (rucks was utilized as till placement advances to <br />within filly Ceet of the slope face. No till placement occurred during this qum-(er. <br />COVE12 MATERIAL <br />As documented by previous inspection reports, cover placement, seeding and nmlching occurred during the <br />second quarter 2002. During [he 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 till 7. <br />'Phis area was being seeded a[ the time of this inspection. Seed certificate is a(tached. <br />STRUCTURAL INTEGRITY <br />The entire excess spoil fill facility was examined for signs of failure and instability such as tension cracks, <br />ground movement, springs and seeps, and standing water. No indication of potential instability was <br />observed. <br />DOCUMENTATION ANU OTHER O6SERVATIONS <br />Vegetation density is improving across the fill area, likely a result of the above normal precipitation <br />received during the third quarter. No significant erosion was noted. Es(ablished drainage appears to be <br />functioning as designed. <br />4"+ . <br />CERTIFICATION <br />Inspection was conducted by Ronald G. Thompson, a qualified professional and MSI IA 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 State 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 deterrnined during this inspection and by discussions with mine <br />personnel, is in accordance with designs as proposed by C"I~L'1'hornpson in their report dated April 27 and <br />amended July 27, 2001 and as approved by the Division of Minerals and Geology. <br />~~~ <br />Ronald G. Thompson <br />Inspector <br />Charles W. McGlolhli <br />I'rolessional Engineer <br /> <br />