2011-01-19_REVISION - C1981019 ‎(6)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 1/19/2011
• Doc Name: Updated 2011 2008 Phase III Bond Release Evaulation - Year 2
• From: Colowyo Coal Company
• To: DRMS
• Type & Sequence: SL5
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

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Table A-3 Colowyo - Vegetation Cover - 2008
Phase III Year 2 - Raw Data
Pe rcen t Ground Cover Based on Po int-Intercept Sampling
Transect No.-> 1 2 4 5 7 8 10 11 13 14 16 17 19 20 22 23 25 26 28 29 31 32 34 35 37 38 40 41 4L-44J Average Relative Freq
Grasses and Grass-likes Cover Cover
I P Agropyroncr/statum Crested Wheatgrass 4 14 3 8 34 32 21 1 9 4 7 5 8 6 16 5.73 8.09 50
N P Agropyron dasystachyum Thickspike Wheatgrass 24 26 8 8 20 2 1 3 5 4 3.37 4.75 33
I P Agropyron intemwdlum Intermediate Wheatgrass 23 9 18 44 30 7 40 31 34 18 2 22 44 20 9 21 12 4 7 36 36 52 1S 52 21 23 14 31 30 11 23.97 33.84 100
N P Agropyrondpanum SbeambankWheatgrass 9 3 6 3 3 10 8 1.40 1.98 23
I P Agropyron s/bedcum Siberian Wheatgrass 4 14 2 0.67 0.94 10
N P Agrop n s icatum Bluebunch Wheatgrass 3 1 0.13 0.19 7
N P Agropyron trachycaulum Slender Wheatgrass 1 17 4 6 0.93 1.32 13
I P Agropyron trichophorum Pubescent Wheatgrass 8 0.27 0.38 3
I P Bromus /nem7is Smooth Brome 1 4 5 55 1 5 2 2 1 2.53 358 30
I A Sromusjaponicus Japanese Brome 2 2 8 11 4 0.90 1.27 17
I A Bromustectorum Cheatgrass 4 7 11 2 1 4 1 14 5 1 7 8 1 8 2.47 3.48 47
I P Oadyl/sglorneraW Orchard grass 2 11 2 1 2 3 2 9 1.07 1.51 27
N P Elymuscinereus Basin Wildrye 1 3 8 8 7 10 14 29 4 9 6 7 1 19 2 4.27 6.02 50
I P Elymusjunceus Russian Wildrye 1 20 17 12 3 1.77 2.49 17
N P Festuca owna/saxvnontana Hard Fescue 5 3 26 4 8 18 25 1 2 3.07 4.33 30
I P Phleum pratense Timothy 37 1 11 1 14 2.13 3.01 17
N P Poa agas/zens/s Bluegrass 5 0.17 0.24 3
I P Poabulbosa Bulbous blu rass 15 1 5 2 0.77 1.08 13
I P Poa pratensis Kentucky Bluegrass 1 5 4 5 1 19 3 2 3 1 5 1.63 2.31 37
N P Poasecunda Sandberg Bluegrass 3 10 0.43 0.61 7
N P Poa s p. Unidintiflable Bluegrass 3 0.10 0.14 3
ForbS
N P Achillea lanulosa Western Yarrow 1 - 0.03 0.05 3
N P A/lium texWe Wild Onion 2 1 3 0.20 0.28 10
I B Alyssum alyssoides Pale Madwort 2 3 2 1 1 1 2 3 0.50 0.71 27
I P Astragalus titer Cicer Milkvetch 18 26 19 10 17 20 2 4 10 7 2 18 2 11 9 5 14 6.47 9.13 57
N P Asbagalustenellus LooseflowerMilkvetch 2 0.07 0.09 3
N A Collins/a parv/tlora Maiden Blue Eye Mary 2 0.07 0.09 3
I B Lac=a serrrola Prickly Lettuce 1 0.03 0.05 3
N P Linum lewisu Lewis Flax 1 8 1 0.33 0.47 10
I P Med/cagosabva Alfalfa 4 4 6 8 1 4 50 14 23 3.80 5.36 30
I A Ranunculus tesbculatus Nut Buttercup 1 2 3 0.20 0.28 30
I A S/symbr/um albssimum Tumble Mustard 1 0.03 0.05 3
I A Thlas i arvense Field Penn cress 1 0.03 0.05 3
I B Tragopogon dubius False Salsify 1 1 0.07 0.09 7
Unidentifiable 1 0.03 0.05 3
Shrubs, Cacti & Trees
N P Artem/sia ' entata wyo. Wyo. Big Sagebrush 5 5 0.33 0.47 7
N P Chrysothamnus nauseosus Rubber Rabbitbrush 7 8 0.50 0.71 7
N P Rosa sp. Ornamental rose 10 0.33 0.47 3
N P S?mphoncarflos oreon ius Mountain Snow berry 1 0.03 5 3
..., Mean
Total Plant Cover 80 77 62 62 75 62 72 75 81 61 79 53 52 69 67 88 69 77 79 66 76 73 57 76 75 69 81 78 75 59 70.83
Rock 0 0 1 0 1 2 1 0 0 2 0 1 1 0 0 1 0 0 1 0 1 0 0 0 0 1 2 0 0 1 0.53
Litter 20 23 19 38 22 23 27 25 17 29 21 35 38 27 30 11 26 21 17 34 23 27 30 19 20 29 17 20 18 30 24.53
Bare ground 0 0 18 0 2 13 0 0 2 8 0 11 9 4 3 0 5 2 3 0 0 0 13 5 5 1 0 2 7 10 4.10
Total Perennial Cover 80 75 58 60 74 54 62 68 70 58 79 49 47 68 48 87 61 75 78 66 69 64 46 76 75 64 81 78 74 51 66.50
D No. of Perennial Grasses (3% - 500/6 Rel. Cover) = 12
iversity
No. of Perennial Forbs (3% - 500/6 Rel. Cover) = 2
Sample Adequacy Calculations Plant Cover Mean = 70.83 t= 1.33 n = 20
Variance = 81.32 n,N„ = 2.86