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Chart 1) consisted of 48.4% live vegetation, 2.6% rock, 37.2% litter, and bare soil exposure of 11.9 %. <br />Perennial cover across the unit averaged 39.6% with annual and biennial cover averaging 8.8 %. <br />Dominant taxa were Griffiths Wheatgrass (Agropyron albicans), big sagebrush, cheatgrass, and prairie <br />junegrass, with 11.1 %, 9.7 %, 6.0 %, and 4.3% average cover, respectively. With regard to diversity, the <br />Sagebrush Reference Area exhibited 3 perennial grasses with between 3% and 50% relative cover (Table <br />2). Total relative cover for all forbs excluding noxious weeds in the Sagebrush reference area was 4.7 %. <br />CEDAR CREEK ASSOCIATES, Inc. Page 18 Rio Tinto Energy America - Colowyo Mine <br />2009 Phase III Bond Release Evaluation — Year 2 <br />