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WEST ELK COAL COMPANY, INC. <br />SCOPE OF WORK AND SPECIFICATIONS <br />EXTENSION AND BACRFILL OF EXISTING SOLDIER <br />PILE RETAINING WALL <br />1.0 Project Description - The work consists of extending an <br />existing soldier pile retaiing wall in height, adding <br />waler, driving 6" X 6" W-beam pilings, installing cable <br />tiebacks, and installing compacted backfill behind the wall. <br />The retaining wall is located along the main mine access <br />road at the Mt. Gunnison mine site. The work on the <br />existing retaining wall will be done to the extent possible <br />concurrently with the construction of the soldier pile <br />retaining wall and waterline relocation below the mine <br />access road to the extent possible. The wall will be <br />extended 4 feet in height and lagged with treated wood <br />similar to the existing lagging. A series of steel walers <br />will be welded to the back of the wall to prevent the <br />soldier beams from spreading and to provide anchorage for <br />the cable tiebacks. <br />2.0 Project organization and Responsibilities - Same as that <br />stated for mine access road retaining wall and waterline <br />relocation. <br />3.0 Scope of Work and Specifications <br />3.1.1 Site Preparation - A CMP will be placed in the <br />shotcrete ditch and covered with fill a minimum of 1.5 <br />feet above the top of the pipe. A ramp will be <br />constructed up the slope to allow equipment to access <br />the area behind the wall. One lane of the mine access <br />road will be kept open at all times. <br />