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Table 1 Colo o - Vegetation Cover - 2008 <br />Average Groilnd Cover <br />Summary <br />p <br />x <br />(Page <br />2 of 2 <br />Sampling Year -> <br />2007 <br />2008 <br />Area -> <br />Phase III <br />Mountain <br />I Sagebrush <br />Weighted Phase III <br />Mountain <br />Sagebrush <br />Weighted <br />Shrub R.A. <br />R.A. <br />Reference <br />Shrub R.A. <br />R.A. <br />Reference <br />Wei ht -> <br />100 °� <br />55% <br />45% <br />Values <br />100% <br />55% <br />45% <br />Values <br />Forbs Continued <br />N <br />A Lepidium ensiilorum <br />Prairie Pepperweed <br />- <br />0.10 <br />- <br />0.06 <br />N <br />P Unum lewisii <br />Lewis Fla <br />0.43 <br />0.30 <br />0.14 <br />0.33 <br />- <br />0.20 <br />0.09 <br />NP <br />Lomatium dissectum <br />Femleaf Biscuitroo <br />- <br />- <br />- <br />- <br />0.10 <br />0.05 <br />N <br />P Lupinuscaudatus <br />Tailcup Lupin <br />0.70 <br />0.25 <br />0.50 <br />4.55 <br />2.50 <br />N <br />P Lupinussp. <br />Lupine <br />- <br />0.05 <br />0.02 <br />- <br />_ <br />N <br />B Machaeranthera canescens <br />Hoa Aste <br />0.05 <br />0.03 <br />I <br />P Medicago sativa <br />Alfalfa <br />2.93 <br />- <br />- <br />3.80 <br />N <br />P Phlox hoodii <br />Hood Phlo <br />- <br />0.20 <br />0.09 <br />I <br />A Ranunculus testiculatus <br />Nut Butt u <br />0.03 <br />- <br />- <br />0 <br />N <br />P Serwoo muRilobatus <br />Lobeleaf Groundsel <br />- <br />0.10 <br />0.06 <br />- <br />0.10 <br />0.06 <br />I <br />A SisymbnLlm altissimum <br />Tumble Mustard <br />0.03 <br />- <br />- <br />- <br />0.03 <br />- <br />N <br />P Sphaeralcea coccinea <br />Scarlet Globemallow <br />- <br />0.05 <br />0.02 <br />0.40 <br />0.18 <br />N <br />P Stenotusarmenoides <br />ThriftyGoldenweed <br />- <br />2.10 <br />0.95 <br />0.15 <br />1.55 <br />0.78 <br />I <br />A 7hlaspiarvense <br />Field Pennycress <br />0.13 <br />0.05 <br />0.02 <br />0.03 <br />0.15 <br />0.08 <br />I <br />B Tragopogon dubius <br />False Salsif <br />0.03 <br />0.10 <br />0.05 <br />0.07 <br />0.10 <br />0.30 <br />0.19 <br />lJnideriti�6le <br />0 <br />0 - 02 <br />- 0 03 <br />- <br />- <br />Sub- shrubs <br />N <br />P Ceratoides lanata <br />Winte <br />0.20 <br />9 <br />0.5 <br />0.2 <br />N <br />P Enagonum microthecum <br />Slender Buckwhea <br />- <br />- <br />0.15 <br />0.07 <br />N <br />P Gutierrezia samthrae <br />Snakeweed <br />1.05 <br />0.47 <br />- <br />2.90 <br />1.31 <br />N <br />P a onia repens <br />L reeping aarDerryl <br />- <br />- <br />- <br />.14 <br />Shrubs, Cacti & Trees <br />N <br />P AmelachieraInlrolla <br />berviceberry <br />0.80 <br />1.15 <br />0.96 <br />0.55 <br />0.50 <br />0.53 <br />N <br />P Artemisia Cana <br />Silver Sage <br />- <br />- <br />- <br />- <br />_ <br />- <br />- <br />N <br />P Artemisia tndentata w o. <br />Wyo. Big Sa ebrush <br />0.20 <br />11.30 <br />10.00 <br />10.72 <br />033 <br />12.30 <br />9.55 <br />11.06 <br />N <br />P A thplex canescens <br />Four- wing Saltbush <br />- <br />N <br />P Chrysothamnus nauseosus <br />Rubber Rabbitbrush <br />0.30 <br />- <br />0.17 <br />0.50 <br />0.35 <br />0.05 <br />0.22 <br />N <br />P Chrysotl7amnus viscidiNorus <br />Low Rabbitbrush <br />0.30 <br />0.40 <br />0.35 <br />1.45 <br />0.25 <br />0.91 <br />N <br />P Mahonia repens <br />Creeping Barberry <br />0.05 <br />- <br />0.03 <br />N <br />P Prunus orginiana <br />Chokecherry <br />- <br />0.10 <br />- <br />0.06 <br />N <br />P Quercus oambelly <br />GambelOa <br />2.75 <br />1.51 <br />2.20 <br />1.21 <br />N <br />P Rosa sp. <br />Omamental rose <br />- <br />- <br />0.33 <br />N <br />P Ong honcalpos oleo hilus <br />Mountain Snowberryl <br />4.40 <br />2.20 <br />3.41 <br />0.03 <br />6.55 <br />1.55 <br />4.30 <br />Total Plant Covel <br />70.00 <br />56.35 1 <br />57.25 <br />56.76 <br />70.83 � <br />63.00 <br />Kes <br />57.85 <br />60.68 <br />Rocki <br />0.27 <br />0.65 <br />2.95 <br />1.69 <br />0.53 <br />0.50 <br />2.40 <br />1.36 <br />Litte <br />24.57 <br />33.60 <br />29.05 <br />31.55 <br />24.53 <br />31.30 <br />25.60 <br />28.74 <br />Bare round <br />5.17 <br />9.40 <br />10.75 <br />10.01 <br />4.10 <br />5.20 <br />14.15 <br />9.23 <br />Total Perennial Z;;_er l <br />51.35 <br />41.9S 1 <br />47.12 <br />66.501 <br />55.05 <br />34.7 <br />45.89 <br />SurnrnarV by Gfeform:.r;. <br />.. <br />Perennial Grasses <br />56.50 <br />29.30 <br />22.30 <br />26.15 <br />54.40 <br />23.60 <br />16.35 <br />20.34 <br />Annual Grasses <br />1.47 <br />4.55 <br />12.75 <br />8.24 <br />3.37 <br />6.20 <br />22.05 <br />13.33 <br />Perennial Forbs <br />11.07 <br />2.15 <br />4.65 <br />3.28 <br />10.90 <br />7.70 <br />2.90 <br />5.54 <br />Annual & Biennial Forbs <br />0.77 <br />0.45 <br />2.55 <br />1.40 <br />0.97 <br />1.65 <br />1.10 <br />1.40 <br />Noxious / Aggressive Weeds <br />- <br />- <br />- <br />- <br />0.10 <br />0.06 <br />Sub - Shrubs <br />- <br />- <br />1.25 <br />0.56 <br />- <br />0.25 <br />3.55 <br />1.74 <br />Shrubs <br />0.20 <br />19.90 <br />13.75 <br />17.13 <br />1.20 <br />23.50 <br />1190 <br />18.28 <br />Sample Adequac Calculations: <br />, <br />r <br />Mean = <br />70.00 <br />56.35 <br />57.25 <br />70.83 <br />63.00 <br />57.85 <br />Variance = <br />55.448 <br />83.397 <br />148.934 <br />81.316 <br />39.789 <br />87.19 <br />n = <br />30 <br />20 <br />20 <br />20 <br />20 <br />20 <br />n.. = <br />1.95 <br />4.63 <br />8.01 <br />2.86 <br />1.77 <br />4.59 <br />Cedar Creek Associates, Inc. Page 22 Colowyo Mine - Bond Release Evaluation <br />Phase III Year 2 <br />