2011-01-19_REVISION - C1981019 (6)

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Table 1 Colowyo - Vegetation Cover - 2008 Page 1 of 2) Average Ground Cover Summary Sampling Year -> 2007 2008 Area -> Phase III Mountain Sagebrush Weighted phase III Mountain Sagebrush Weighted Shrub R.A. R.A. Reference Shrub R.A. R. A. Reference Wei ht-> 100% 55% 45% Values 100% 55% 45% Values Grasses and Grass-likes N P Agropyron albicans Griffiths Wheatgrass - 0.40 2.25 1.23 - 1.95 3.05 2.45 I P Agropytoncristatum Crested Wheatgrass 5.90 - - 5.73 - 0.05 0.02 N P Ara ndas tack m Thicks ike Wheatgrass 3.13 1.05 0.47 3.37 - - I P Agmpyronintefinedium Intermediate Wheatgras 24.40 23.97 N P Agropyronnp3num StreambankWheatgrass 0.30 1.40 I P Agro nsibencum Siberian Wheatgrass 1.87 0.05 0.02 0.67 N P Agropyronsmithii Western Wheatgras 2.15 4.65 3.28 - 2.60 4.25 3.34 N P Agropyronspicatum Bluebunch Wheatgras - - - - 0.13 - - - N P Agroron trachycaulum Slender Wheatgrass 0.17 6.30 3.47 0.93 3.70 2.04 I P Agropyron Mchophorum Pubescent Wheatgrass 0.97 - - 0.27 - - I P Bromus inermis Smooth Brom 0.70 1.50 0.68 2.53 I A Bromus a nicus Japanese Brome 1.20 - 10.50 4.73 0.90 - 7.95 3.58 N P Bromusmarginatus Mountain Brom - 0.70 0.39 - 1.65 - 0.91 I A Bromus tectonrm Cheatgrass 0.27 4.55 2.25 3.52 2.47 6.20 14.10 9.76 N P Carex eyes Elk Sed a 2.95 - 1.62 - 0.90 - 0.50 I P Dact&sglomerata Orchardgrass 0.23 - 1.07 - - N P Elymuscinereus Basin Wildrye 6.57 4.27 I P El us unceus Russian Wildrye 2.80 1.77 N P Festuca owna/saximontana Hard Fescue 3.77 - - - 3.07 - - - N P Koelenamacrantha Prairie Junegras - 2.85 1.28 - 0.15 4.90 2.29 N P 0 opsishymenoides Indian Ricegras 0.60 0.27 - - - - I P Phleum pratense Tiimoth 2.13 N P Poa agasizensis Bluegrass - 7.75 2.10 5.21 0.17 4.90 2.70 I P Poo, bulbosa Bulbous bluegrass 0.50 - 0.77 - - N P Poa fendlenana Mutton Bluegrass - 0.90 0.41 - - I P Poapmtensis Kentucky Bluegrass 5.13 - - 1.63 - 0.10 0.05 N P Pica secunda Sandberg Bluegrass 0.07 0.20 6.00 2.81 0.43 0.20 3.65 1.75 N P Poasp. Unidintifiable Bluegrass - - - - 0.10 - - N P Sitanion hystrix Bottlebrush Squirreltail 0.35 0.35 0.35 - 0.35 0.35 0.35 N P Sb lettermanii Letterman Needlegrass - 3.15 - 1.73 - 4.65 - 2.56 nesomr Nelson Needlegras 2 4 2 1.40 Forbs N P Achilea anulosa Western Yarrow - 0.60 0.55 0.58 0.03 0.50 0.05 0.30 N P Allium textile Wild Onion 0.07 0.10 0.20 0.15 0.20 0.20 - 0.11 I B Alyssum al soides Pale Madwo 0.33 0.25 1.85 0.97 0.50 0.10 0.65 0.35 N A Androsace occidentalis Westem Rockjasmin 0.15 0.07 - - - N P Arenana hooker Hooker's Sandwo 0.35 0.16 - I P Astagalus ricer Cicer Milkvetch 7.63 - - - 6.47 - - - N P Astragalussp. Milkvetch - - - - 0.05 0.02 N P Astragalus tenellus Looseflower Milkvetch 0.60 0.27 0.07 0.10 0.35 0.21 N P Balsamorhiza sa ittata Arrowleaf Balsamruo 0.05 0.02 - I B Camelina microcarpa Littlepod false flax - - - 0.05 0.02 N B Qrsiumundulatum WavyleafThistl - 0.05 0.02 Nw B Cirsium vulgare Bull Thistle 0.10 - 0.06 N A Collinsia parwflora Maiden Blue Eye Ma 0.13 0.05 0.05 0.05 0.07 0.60 - 0.33 N A Collomia lineans Slenderleaf Collomia 0.10 0.10 0.10 - 0.60 0.05 0.35 N A Ccrdylanthus wrighdi Wright's Bird's Bea 0.10 0.05 - - N P Crepis ocridentalis Largeflower Hawksbeard 0.10 0.05 N P Cymopterussp. Spdngparsle 0.05 0.02 N A Draba nemorosa Woodland Draba 0.10 0.05 N P Galium bifolium Twinleaf Bedstraw - 0.60 - 0.33 1.05 0.58 N B Gnndelia squarrosa Curlycup Gumweed 0.07 - - I B Lactuca semola Prickly Lettuce - 0.03 - Lat rus eucant us Peavine - U.03 - L.05 0.58 CEDAR CREEK ASSOCIATES, Inc. Page 15 Colowyo Coal Company 2008 Phase III Bond Release Evaluation