2011-01-19_REVISION - C1981019 (6)

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Table 2 Colowyo - Vegetation Cover - 2008 (Page 1 of 2) Relative Ground Cover Summary Sampling Year -> 2007 2008 Area -> Phase III I Mountain Sagebrush Phase III Mountain Sagebrush Shrub R.A. R.A. Shrub R.A. R.A. weight -> 100% 55% 45% 100% 55% 45% Grasses and Grass-likes N P Agropyron alblcans Griffiths Wheatgrass - 0.71 3.93 - 3.10 5.27 I P Agropyron cr/statum Crested Wheatgrass 8.43 - - 8.09 - 0.09 N P Agropyron dasystachyum Thickspike Wheatgrass 4.48 1.83 4.75 - I P Agropyron intermedium Intermediate Wheatgrass 34.86 - 33.84 N P Agropyron npanum Streambank Wheatgrass 0.43 - 1.98 I P Agrop ron slberlcum Siberian Wheat grass 2.67 0.09 0.94 - - N P Agropyron smith// Western Wheatgrass - 3.82 8.12 - 4.13 7.35 N P Agropyron spicatum Bluebunch Wheatgrass - - - 0.19 - - N P Agropyron trachycau/um Slender Wheatgrass 0.24 11.18 1.32 5.87 I P Agropyron trichophorum Pubescent Wheatgrass 1.38 - - 0.38 - I P Bromus inermis Smooth Brome 1.00 2.62 3.58 - I A Bromus a onicus Japanese Brome 1.71 - 18.34 1.27 - 13.74 N P 8mmusmarginatus Mountain Brome - 1.24 - - 2.62 - I A Bromus tectorum Cheatgrass 0.38 8.07 3.93 3.48 9.84 24.37 N P Carexgeyeri Elk Sedge - 5.24 - - 1.43 - I P Dacty//sglomerata Orchardgrass 0.33 - 1.51 - N P Elymus cinereus Basin Wildrye 9.38 6.02 I P Elymusjunceus Russian Wildrye 4.00 2.49 N P Festuca owna/sax/montana Hard Fescue 5.38 - 4.33 - - N P Koeler/a macrantha Prairie Junegrass - 4.98 - 0.24 8.47 N P Oryzopsishymenoldes Indian Ricegrass 1.05 - - - I P Phleum pretense Timothy - - 3.01 - N P Poa agasizensis Bluegrass - 13.75 3.67 0.24 7.78 I P Poe bulbosa Bulbous bluegrass 0.71 - - 1.08 - N P Poa fend/eriana Mutton Bluegrass - 1.57 - - I P Poe pratensis Kentucky Bluegrass 7.33 - - 2.31 - 0.17 N P Poo secunda Sandberg Bluegrass 0.10 0.35 10.48 0.61 0.32 6.31 N P Poa sp. Unidintifiable Bluegrass - - - 0.14 - - N P Sitanion hystrix Bottlebrush Squirreltail 0.62 0.61 - 0.56 0.61 N P Stipa /ettermanii Letterman Needlegrass 5.59 7.38 ipa nesonrr Nelson ee egrass - Forbs c i ea anuosa Western arrow - 1.06 0.96 0.05 0.79 0.09 N P All/um textile Wild Onion 0.10 0.18 0.35 0.28 0.32 - I B Alyssum alyssoides Pale Madwort 0.48 0.44 3.23 0.71 0.16 1.12 N A Andmsace occidentalis Western Rockjasmine - - 0.26 - - - N P Arenana hookeri Hooker's Sandwo - 0.61 - I P Astragalus cicer Cicer Milkvetch 10.90 - 9.13 - N P Astragalus so. Milkvetch - - - - 0.09 N P Astragalustenellus LooseflowerMilkvetch 1.05 0.09 0.16 0.61 N P Balsamorhiza sagittata Arrowleaf Balsamroot 0.09 - - - I B Came/ina microcarpa Littlepod false flax - 0.09 N B C/rs/um undu/atum Wavyleaf Thistle - 0.09 Nw B Cirsium vulgare Bull Thistle - - - - 0.16 - N A Co//insia patwflora Maiden Blue Eye Ma 0.19 0.09 0.09 0.09 0.95 - N A Co/lom/a /inearis Slenderleaf Collomia - 0.18 0.17 - 0.95 0.09 N A Cordylanthus wrightii Wright's Bird's Bea - 0.17 - - N P Crepisoccidentalis Largeflower Hawksbeard 0.17 N P Cymopterussp. Springparsle 0.09 N A Draba nemorosa Woodland Draba - 0.17 - N P Gal/um bifo/ium Twinleaf Becistra - 1.06 - 1.67 N B Grindel/a squarmsa Curlycup Gumweed 0.10 - - - I B Lactuca serriola Prickly Lettuce - - 0.05 - at rus eucan us eavine - - CEDAR CREEK ASSOCIATES, Inc. Page 17 Colowyo Coal Company 2008 Phase III Bond Release Evaluation