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Spoil Fill #8, <br />December 31, 2015 <br />Page 2 <br />FILL PLACEMENT <br />Fill placement has been completed in accordance with the approved plan. No additional fill placement has <br />occurred since cessation of mining in 2002 <br />COVER MATERIAL <br />Final fill configuration has been established and topsoil material placed on the excess spoil -fill. The area <br />was mulched and seeded in the fourth quarter of 2003. Soil was placed and spread on the upper most <br />surface of the fill in May of 2004. During the second quarter of 2005, areas disturbed by maintenance of <br />the armored down -drains were seeded using certified weed free straw and the approved rangeland seed mix. <br />The construction access road east of the east down -drain was hand mulched and seeded during August of <br />2006.Minor maintenance work has been performed as needed since that time. <br />STRUCTURAL INTEGRITY <br />The excess spoil fill facility was examined for signs of failure and instability such as tension cracks, ground <br />movement, springs and seeps, and standing water. No indications of potential instability or adverse <br />conditions were observed during this inspection. <br />DOCUMENTATION AND OTHER OBSERVATIONS <br />Winter conditions prevail with this north facing slope snow covered. Overall, the site is in good condition. <br />CERTIFICATION <br />This inspection was conducted by Ronald G. Thompson, a qualified professional and MSHA certified <br />inspector of earth and rockfill embankments and impoundments, under the direction of Mr. Charles <br />McGlothlin, a 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. 8 construction and placement, as <br />noted since the previous certification and as determined during this inspection and 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 />Ronald G. Thompson <br />Inspector <br />. I j <br />Charles W. McGlothlin <br />Professional Engineer <br />Inspections completed in compliance with Rule 4.09. 1 (1 1)(b) must be submitted to the Division within two weeks of completion. <br />