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M04007MT <br />1.0 INTRODUCTION <br />This report presents the results of the geotechnical engineering <br />study we conducted for the existing and proposed Bowie Number 2 <br />Mine gob pile which is located near Paonia, Colorado. The study was <br />conducted at the request of Mr. Collin Stewart in accordance with <br />our proposal for the construction proposal dated October 15, 2003. <br />The conclusions, suggestions and recommendations presented in <br />this report are based on the data gathered during our laboratory <br />study and on our experience with similar soil conditions. Factual <br />data gathered during the laboratory work are summarized in Appendix <br />A. <br />1.1 Proposed Construction <br />It is our understanding that the gob pile is currently under <br />construction and is approaching one hundred (100) feet in vertical <br />height. The face of the constructed gob pile is laid back at an <br />' inclination of about two to one (2:1) (horizontal to vertical). We <br />understand that the proposed gob pile will be constructed to about <br />two-hundred-thirty (230) feet in height. The slope face of the pile <br />' will include three (3) horizontal benches, fifteen (15) feet in <br />width located approximately every fifty (50) vertical feet and a <br />haul road twenty (20) feet in width. <br />' 1.2 Scope of Services <br />Our services included geotechnical engineering laboratory stud- <br />ies, analysis of the acquired data and report preparation for the <br />existing and proposed gob pile construction. The scope of our <br />services is outlined below. <br />' - We visited the site on August 3, 2004 to obtain samples of the <br />coal gob material and clay borrow material. <br />' - The laboratory study included tests of soil samples obtained <br />during our site visit and was performed on specimens which were <br />proportioned and blended from the coal gob material and clay <br />' borrow to help assess: <br />37Cam6ert anD ~,s~,e'ociates <br />CONSULTING GEOTECHNICAL ENGINEERS AND <br />MATERIAL TESTING <br />