2010-03-12_REPORT - C1981019 (8)

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Table 5 Colo o - Vegetation Cover - 2009 CSU Shrub Plots -- Average Cover Summary - to 5 Percent Ground Cover Based on Point-Intercept Sampling In side Fenc e Ou tside Fen ce Tesr P,6r --> 1 2 3 4 5 1 2 3 4 Sa Topsoi/--> 18" 6" 0 0 Average 18" 6" 6" 0 0 Average ..-1 1&2 1 1&2 1&2 3 1&2 1 1&2 1&2 3 Grasses and Grass-likes I P Agropyron cnstatum Crested Wheatgrass - - - - - - 0.20 - 0.20 0.40 0.16 I P Agropyronintermedium IntermediateWheatgrass 1.60 - - 0.32 I P Agropyron stbencum Siberian Wheatgrass - 0.20 0.04 N P Agropyronsmthi/ Western Wheatgrass 1.20 - - - 0.24 - 0.80 F 0.40 0.24 N P Agropyron spicatum Bluebunch Wheatgrass - 6.40 5.60 2.00 2.80 0.40 - 0.40 0.16 N P Agropyron spicatum inerme Beardless Bluebunch W. - - 6.00 1.20 N P Agropyron trachycaulum Slender Wheatgrass 0.80 - 0.40 0.24 5.40 0.40 5.80 3.88 I P Bromus inermis Smooth Brome - 1.40 7.20 - - 1.72 - 0.40 1.80 - - 0.44 I A Sromusjapomcus Japanese Brome - 0.40 0.20 - - 0.12 - - - - - - N P Bromusmarginatus Mountain Brome 2.20 - - - - 0.44 0.20 0.60 0.40 - - 0.24 I A Bromus tectorum Cheatgrass 0.20 - - - - 0.04 0.20 - 0.40 0.20 0.20 0.20 I P DaWlsglomerata Orchardgrass - - - - - - - - 0.20 - 0.20 0.08 N P Festuca ov/na/sax/montana Hard Fescue 0.60 0.60 5.20 6.00 2.80 3.04 5.20 5.80 3.80 2.40 0.60 3.56 I P Paapratensis Kentucky Bluegrass 22.60 3.80 4.80 - - 6.24 36.00 2.20 6.60 - - 8.96 N P Poa secunda Sandberg Bluegrass - 0.80 - - - 0.16 - - - - - - N P St/pa viridula Green Needlegrass - - - - - - - 0.40 - - - 0.08 Forbs N P Achillea lanuiosa Western Yarrow 1.60 - 0.20 0.20 0.20 0.44 - 2.40 - 1.00 1.68 I P Astragalus ricer Cicer Milkvetch - - - 0.60 1.20 0.36 - 4.20 6.80 3.40 2.92 N P Astragalus sp. Milkvetch - - - - - 0.60 0.12 N P Baisamorhiza sagittata Arrowleaf Balsammot 0.40 0.08 r 0.20 - 0.04 N A Collom/a Anearis Slenderleaf Collomia - 0.40 0.08 0.04 N B Gndela squ nwro Curlycup Gumvreed 1.00 0.20 0.20 0.04 N P Heliomeiis multillora Goldeneye - - - 0.20 0.04 N P Linum lewisii Lewis Flax 0.20 1.20 1.20 1.60 0.40 0.92 2.20 2.20 3.40 0.80 3.00 2.32 N P Penstemon str/ctus Rocky Mtn. Penstemon - - - 2.20 2.20 0.88 - - 0.60 0.40 3.00 0.80 I P Sanguisorda minor Small Burnet - - 0.20 - 0.04 - - - Shrubsr Sub-shrubs & Trees N P Artemisia Cana Silver Sage 2.40 1.80 0.20 7.20 19.40 25.20 2.40 - 0.20 9.44 N P Artemisia tr/dentala wyo. Wyo. Big Sagebrush 4 16.80 6.20 19.20 21.88 4.80 24.00 7.80 1.80 2.00 8.08 N P Atnplex canesrens Four-wing Saltbush - 2.40 0.48 N P Chrysofhamnus nauseosus Rubber Rabbitbrush 1.00 3.00 11.60 3.12 2.20 2.60 1.00 0.40 1.24 N P ChrWoMamnus v/sc/dinorus Low Rabbitbrush - - 0.40 0.08 N P Purshia tridentate Antelope Bitterbrush 1.60 3.00 1.12 0.80 - - 0.16 N P Symphoncarpos oreophilus Mountain Snowberry 0.40 - 0.08 Total Plant Cover 85.40 52.40 49.40 30.20 40.20 51.52 81.00 64.80 43.40 24.00 22.00 47.04 Rock 0.60 1.40 4.60 12.80 10.80 6.04 0.80 1.20 3.00 4.60 5.60 3.04 Litter 9.20 26.80 32.80 13.20 9.80 18.36 13.20 16.40 21.20 9.20 2.60 12.52 Bare ground 4.80 19.40 13.20 43.80 39.20 24.08 5.00 17.60 32.40 62.20 69.80 37.40 Total Perennial Cover 21.30 13.00 11.95 7.55 10.05 12.77 20.15 16.15 10.75 5.95 5.45 11.69 Summa b Lifeform: Perennial Grasses 26.20 7.80 24.00 11.60 4.80 14.88 49.00 10.60 18.80 10.20 8.20 19.36 Annual Grasses 0.20 0.40 0.20 - - 0.16 0.20 - 0.40 0.20 0.20 0.20 Perennial Forts 1.80 1.60 1.60 4.60 4.00 2.72 7.40 2.60 10.60 8.00 11.00 7.92 Annual & Biennial Forbs - - 1.40 - - 0.28 0.20 0.20 - - - 0.08 Noxious / Aggressive Weeds - - - - - - - - - - - - Shrubs & Sub-Shrubs 5710 42.60 22.20 14.00 31.40 33.48 24.20 51.40 13.60 5.60 2.60 19.48 Sample Adequacy Calculations: Mean = 85.40 52.40 49.40 30.20 40.20 81.00 64.80 43.40 24.00 22.00 - Variance = 18.80 45.30 22.30 48.20 183.20 83.00 131.20 32.80 16.00 64.00 n = 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 nma = 0.61 3.88 2.15 12.42 26.65 2.97 7.34 4.09 6.53 31.08 CEDAR CREEK ASSOCIATES, Inc. Page 37 Colowyo Mine 2009 Revegetation Monitoring Report