2010-03-12_REPORT - C1981019 (8)

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Table 6 Colo o - Vegetation Cover - 2008 CSU Shrub Plots - Relative Cover Summary - 1 to 5 Percent Ground Cover Based on Point-Intercept Sampling I nside Fence O utside Fe nce Test Plot --> 1 2 3 4 5 1 2 3 4 Sa Topsoil--> 18 6" 6" 0 d Average 18" 6" 6" 0 0 Average Seed mix--> 1&2 1 1&2 1&2 3 1&2 1 1&2 1&2 3 Grasses and Grass-likes I P Agropyron cristatum Crested Wheatgrass - - - - - - 0.25 - 0.46 - 1.82 0.51 I P Agropyron intermedium Intermediate Wheatgrass - - - - - - 1.98 - - - - 0.40 I P Agropyronsibericum Siberian Wheatgrass - - - - - - - - - - 0.91 0.18 N P Agropyronsmidrii Western Wheatgrass - 2.29 - - - 0.46 - 1.23 - - 1.82 0.61 N P Agropyron spicatum Bluebunch Wheatgrass - - 12.96 18.54 4.98 7.29 0.49 - - - 1.82 0.46 N P Agropyron spicatum inerme Beardless Bluebunch W. - - - - - - - - 27.27 5.45 N P Agropyron trachycau/um Slender Wheatgrass 0.94 - 0.81 - - 0.35 6.67 0.62 13.36 32.50 - 10.63 I P Bromus mermis Smooth Brome - 2.67 14.57 - - 3.45 - 0.62 4.15 - - 0.95 I A Bromusjaponicus Japanese Brome - 0.76 0.40 - - 0.23 - - - - - - N P 8mmusmarginatus Mountain Brome 2.58 - - - - 0.52 0.25 0.93 0.92 - - 0.42 I A Bromus teclorum Cheatgrass 0.23 - - - - 0.05 0.25 - 0.92 0.83 0.91 0.58 I P Dactytisg/omerata Orchardgrass - - - - - - - - 0.46 - 0.91 0.27 N P Festuca ovina/saximontana Hard Fescue 0.70 1.15 10.53 19.87 6.97 7.84 6.42 8.95 8.76 10.00 2.73 7.37 I P Poa pratensis Kentucky Bluegrass 26.46 7.25 9.72 - - 8.69 44.44 3.40 15.21 - - 12.61 N P Foasecunda Sandberg Bluegrass - 1.53 - - - 0.31 - - - - - N P Sbpa vindula Green Needlegrass - - - - - - - 0.62 - - - 0.12 Forbs N P Achillea lanulosa Western Yarrow 1.87 - 0.40 0.66 0.50 0.69 6.17 - 5.53 - 4.55 3.25 I P Astragaluscicer CicerMilkvetch - - - 1.99 2.99 0.99 0.25 - 9.68 28.33 15.45 10.74 N P Astragalus sp. Milkvetch - - - - - - - - - 2.73 0.55 N P Balsamorhira sagittata Arrowleaf Balsamroot - 0.76 - - 0.15 - 0.31 - - - 0.06 N A Collomia knearis Slenderleaf Collomia - - 0.81 - - 0.16 0.25 - - - - 0.05 N B Gnndelia squarrosa Curlycup Gumweed - - 2.02 - - 0.40 - 0.31 - - - 0.06 N P Heliomerts multiAora Goldeneye - - - - - - - 0.31 - - - 0.06 N P Linum lemsu Lewis Flax 0.23 2.29 2.43 5.30 1.00 2.25 2.72 3.40 7.83 3.33 13.64 6.18 N P Penstemon strictus Rocky Mtn. Penstemon - - 7.28 5.47 2.55 - - 1.38 1.67 13.64 3.34 I P Sanguisorba minor Small Burnet - - 0.40 - - 0.08 - - - - - - Shrubs, Cacti & Trees N P Artemisia Cana Silver Sage 10.54 43.13 4.86 5.96 0.50 13.00 23.95 38.89 5.53 - 0.91 13.86 N P Attemisia tndentata wyo. Wyo. Big Sagebrush 56.44 36.26 34.01 20.53 47.76 39.00 5.93 37.04 17.97 7.50 9.09 15.51 N P Atriplexcanescens Four-wing Saltbush - - - - - - - - - 10.00 - 2.00 N P Chrysothamnusnauseosus Rubber Rabbitbrush - - 2.02 9.93 28.86 8.16 - 3.40 5.99 4.17 1.82 3.07 N P Chrysothamnus visaditlorus Low Rabbitbrush - - - - 1.00 0.20 - - - - - - N P Purshia tridentata Antelope Bitterbrush - 1.91 3.24 9.93 - 3.02 - - 1.84 - - 0.37 N P Symphoncarpos oreophilus Mountain Snowberry - - 0.81 - - 0.16 - - - 1.67 - 0.33 Summa b 'Lifeforml Perennial Grasses 30.68 14.89 48.58 38.41 11.94 28.90 60.49 16.36 43.32 42.50 37.27 39.99 Annual Grasses 0.23 0.76 0.40 - - 0.28 0.25 - 0.92 0.83 0.91 0.58 Perennial Forbs 2.11 3.05 3.24 15.23 9.95 6.72 9.14 4.01 24.42 33.33 50.00 24.18 Annual & Biennial Forbs - - 2.83 - - 0.57 0.25 0.31 - - 0.11 Noxious / Aggressive Weeds - - - - - - - - - - - - Shurbs & Sub-Shrubs 66.98 81.30 44.94 46.36 78.11 63.54 29.88 79.32 31.34 23.33 11.82 35.14 Diversity (number of grasses with between 3% and 50% relative ground cover and number of ( orbs with between d% and 50% relative ground cover): Number of Perennial Grasses = 1 1 4 2 2 3 2 4 2 1 Number of Perennial Forbs = 0 0 0 2 1 1 1 3 2 4 CEDAR CREEK ASSOCIATES, Inc. Page 38 Colowyo Mine 2009 Revegetation Monitoring Report