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Table 1 Colo o - Vegetation Cover - 2006 <br />Average Ground Cover Summary <br />Area -> <br />Phase II <br />Mountain <br />Sagebrush <br />Shrub RA <br />Ref Area <br />Wei ht -> <br />1 100% <br />55% <br />45% <br />Grasses and Grass -likes <br />N <br />P Agtopyron albicans <br />Griffiths Wheatgrass <br />- <br />0.13 <br />2.20 <br />N <br />P Agropyron dasystachyum <br />Thickspike Wheatgrass <br />5.23 <br />- <br />0.13 <br />I <br />P Agropyron intermedium <br />Intermediate Wheat rass <br />0.17 <br />- <br />N <br />P Agmpyron tip3num <br />Streambank Wheatgrass <br />4.07 <br />I <br />P Agropyronsibeticum <br />Siberian Wheatgrass <br />4.73 <br />N <br />P Agropyron smithiL <br />Western Wheatgrass <br />- <br />0.93 <br />3.40 <br />N <br />P Agmpyron spicatum inerme <br />Beardless Bluebunch W. <br />0.70 <br />- <br />- <br />N <br />P Agropyron trachycau /um <br />Slender Wheatgrass <br />1.70 <br />5.00 <br />- <br />I <br />P Bromus inetmis <br />Smooth Brome <br />1.93 <br />- <br />0.07 <br />N <br />P Bromusmarginatus <br />Mountain Brome <br />- <br />0.67 <br />- <br />I <br />A Bromus tectorum <br />Cheatgrass <br />10.70 <br />0.07 <br />2.07 <br />N <br />P Carex geyeli <br />Elk Sedge <br />- <br />1.33 <br />I <br />P Dactylisglomerata <br />Orchardgrass <br />0.30 <br />- <br />- <br />N <br />P Elymusalbicans <br />Montana Wheatgrass <br />- <br />0.27 <br />N <br />P Elymuscinereus <br />Basin Wildrye <br />1.03 <br />- <br />I <br />P Elymusjunceus <br />Russian Wildrye <br />1.60 <br />N <br />P Festuca owna/sammontana <br />Hard Fescue <br />0.13 <br />- <br />N <br />P Koelena macrantha <br />Prairie Jun rass <br />4.07 <br />N <br />P Poa agasizensis <br />Bluegrass <br />- <br />11.67 <br />2.87 <br />I <br />P Poa pratensis <br />Kentucky Bluegrass <br />1.27 <br />- <br />- <br />N <br />P Poasecunda <br />Sandberg Bluegrass <br />- <br />0.20 <br />2.60 <br />N <br />P Sitanion hystnx <br />Bottlebrush Squirreltail <br />0.13 <br />0.07 <br />N <br />P Sdpa lettetmanii <br />Letterman Needlegrass <br />4.53 <br />0.20 <br />N <br />P Stipa nelsonii <br />Nelson Needlegrass <br />- <br />1.80 <br />- <br />Forbs <br />N <br />P AchIllea lanuliosa <br />Western Yarrow <br />0.03 <br />0.27 <br />7 <br />N <br />P Astragalussp. <br />Milkvetch <br />4.50 <br />- <br />0.07 <br />I <br />A Chenopodium album <br />Lambsqua rt <br />0.10 <br />N <br />A Chenopodium benandien <br />Pitseed Goosefoot <br />0.23 <br />- <br />N <br />P Cirsium undulatum <br />Wavyleaf Thistle <br />- <br />0.40 <br />N <br />A Descuralma pinata <br />Pinnate Tan mustard <br />0.03 <br />I <br />A Descurainiasophia <br />FlixweedTansymustard <br />0.03 <br />N <br />B Gnndelia squatrosa <br />Curlycup Gumweed <br />0.20 <br />N <br />P Hedysalum boreale <br />Northern Sweetvetch <br />0.30 <br />I <br />B Lactuca semola <br />Prickly Lettuce <br />0.10 <br />- <br />N <br />P Lathyrus leucanthus <br />Peavine <br />- <br />0.13 <br />- <br />N <br />P Linum lewisii <br />Lewis Flax <br />0.17 <br />- <br />0.07 <br />N <br />P Lupinuscaudatus <br />Tailcup Lupine <br />- <br />0.07 <br />0.07 <br />N <br />B Machaeranthera canescens <br />Hoary Aster <br />0.07 <br />- <br />0.07 <br />I <br />P Me&cagosadva <br />Alfalfa <br />1.63 <br />- <br />N <br />P Penstemon stnckts <br />Rocky Mtn. Penstemon <br />0.13 <br />- <br />- <br />N <br />P Phloxhoodii <br />Hood Phlox <br />- <br />0.13 <br />I <br />A Salsola australis <br />Russian Thistle <br />1.57 <br />I <br />A Sisymbtium albssimum <br />Tumble Mustard <br />0.43 <br />- <br />N <br />P Sphaetalcea coccinea <br />Scarlet Globemallow <br />- <br />0.40 <br />N <br />P Stellana jamesla <br />Tuber Starwort <br />0.20 <br />- <br />N <br />P Stenotusatmerioides <br />ThriftyGoldenweed <br />1.00 <br />I <br />A 7hlas i arvense <br />Field Pennycress <br />0.13 <br />- <br />Shrubs, Cacti & Trees <br />N <br />P Amelachleraln1folia <br />Service berry <br />7 <br />N <br />P Amelachierutahensis <br />Utah Serviceberry <br />- <br />0.47 <br />0.80 <br />N <br />P Artemisia hidentata <br />Wyo. Big Sa ebrush <br />0.43 <br />5.20 <br />7.93 <br />N <br />P Atnplexcanescens <br />Four -wing Saltbush <br />0.17 <br />- <br />- <br />N <br />P Chtysothamnus nauseosus <br />Rubber Rabbitbrush <br />0.07 <br />N <br />P Chtysothamnus visciditlorus <br />Low Rabbitbrush <br />0,07 <br />N <br />P Gutierreziasarothrae <br />Snakeweed <br />- <br />2.00 <br />N <br />P Quercusgambellii <br />Gambel Oak <br />2.60 <br />- <br />N <br />P .Sym horicatposoreo hilus <br />Mountain Snowberryl <br />1 <br />4.53 1 <br />1.53 <br />Total Plant Coverl <br />43.90 1 <br />39.93 1 <br />32.60 <br />Rock <br />0.70 <br />0.93 <br />1.93 <br />Litter <br />43.83 <br />1 <br />48.93 <br />45.80 <br />Bareground <br />11.57 <br />10.20 <br />19.67 <br />Total Perennial Coverl <br />30.30 1 <br />39.87 <br />30.13 <br />Summary by Lifeform: <br />Perennial Grasses <br />22.87 <br />26.40 <br />15.87 <br />Annual Grasses <br />10.70 <br />0.07 <br />2.07 <br />Perennial Forbs <br />6.77 <br />0.67 <br />1.87 <br />Annual <br />& Biennial Forbs <br />2.90 <br />- <br />0.40 <br />Noxious / Aggressive Weeds <br />- <br />- <br />- <br />Shrubs, Cacti & Trees <br />0.67 <br />12.80 <br />12.40 <br />Sample Adequacy Calculations: <br />Mean = <br />43.44 <br />39.93 <br />32.60 <br />Variance = <br />79.854 <br />91.838 <br />37.838 <br />n = <br />30 <br />15 <br />15 <br />n min = <br />7.22 <br />10.45 <br />7.54 <br />CEDAR CREEK ASSOCIATES, Inc. Page 12 Colowyo Coal Company <br />2006 Phase II Evaluation (Updated Dec -10) <br />