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Kennecott Energy <br />Colowyo Coal Company, L.P. <br />U <br />Colowyo Mine <br />2005 REVEGETATION MONITORING REPORT <br />REVEGETATION UNITS: <br />REFERENCE AREAS: <br />EP032 WP006 516014 <br />EP033 WP009 S16015 <br />EP038 WPO10 <br />EP039 WP011 <br />EP040 <br />EP041 <br />EP044 <br />1.0 INTRODUCTION <br />MOUNTAIN BRUSH <br />SAGEBRUSH <br />Cedar Creek Associates, Inc. (Cedar Creek) was contracted in 2005 by Colowyo Coal Company <br />(Colowyo) to implement a vegetation monitoring program within selected revegetated units at the <br />Colowyo Mine. Monitoring was performed in the interest of ascertaining progress toward revegetation <br />success in general accordance with Rule 3.03, Release of Performance Bonds. The revegetated areas <br />evaluated in 2005 consisted of 13 total unitr ranging in size from 0.9 acres to 30.8 acres. At the time of <br />sampling, revegetation within evaluated units had experienced two, four or seven growing seasons <br />following completion of seeding. In addition, two reference areas (Mountain Brush and Sagebrush) were <br />sampled to provide cover and production comparison values to facilitate an evaluation of success for the <br />reclaimed units. The location of each unit and reference areas evaluated in 2005 is indicated on Map 1 <br />and the sample pointr within each area are provided on Maps 2 - 16 in Section 2.0. <br />Field sampling for the directly measurable variables of ground cover, current annual production <br />(selected units), and woody plant density was systematically conducted within all designated units from <br />July 18 through July 26, 2005. The growing season prior to and during the sampling period could be <br />qualitatively characterized as average with regard to precipitation. Sampling occurred immediately <br />• following the peak of growth in July. Field efforts in 2005 were conducted by Cedar Creek's senior Range <br />Ecologist, Mr. Steven R. Viert and Plant Ecologist, Mr. Erik M. Mohr. <br />Kennecott Energy Co. /Colowyo Mine Page 1 ReVegelBtlOn Monitoring - 200$ <br />