2023-07-13_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 7/13/2023
• Doc Name: Application
• From: Tony Tennyson -Tri-State Generation and Transmission Association, Inc.
• To: DRMS
• Type & Sequence: SL22
• Email Name: ZTT
• Email Name: AME
• Media Type: D
• Archive: No

Table 3 Colo o-Vegetation Cover-2022
Sagebrush Reference Area
Raw Data-Individual Transacts Percent Ground Cover Based on Point-Intercept Sampling
Transect Ab.> 1 3 5 7 9 Ill 13 15 17 19 21 23 25 27 29 31 33 35 37 39 Average Relative
Grasses and Grass-likes Cover Cover Freq.
I P A_4ropyron crutatum Crested Wheatgrass 6 0.30 0.61 5
N P A�opyron dasystachyum Thickspike Wheatgrass 2 1 1 1 3 0.40 0.81 25
I P A_4ropyron inte=edium Intermediate Wheatgrass 8 6 2 6 2 5 1 1.50 3.05 35
N P A_4ropyron smiMii Western Wheatgrass 3 1 3 1 3 2 9 10 9 11 2.60 5.28 50
N P A_4ropyron spicatum Bluebunch Wheatgrass 11 3 0.70 1.42 10
I P Bromus inefmis Smooth Brome 11 4 1 8 40 7 3.55 7.21 30
I A Bromusjaponicus Japanese Brome 2 26 5 6 4 9 7 14 14 8 2 40 3 39 25 15 10.95 22.23 80
X Bromus tectomm Cheatgrass 1 2 1 21 3 3 3 1.70 3.45 35
N P Koefena macra fha Prairie Jun
egrass 3 10 5 8 3 4 2 2 5 11 12 14 15 10 5.20 10.56 70
N P CfJzopsis hymenoides Indian Ricegrass 1 0.05 0.10 5
N P Poa secunda Sandberg Bluegrass 2 3 3 1 4 2 3 6 1 1 1 1 5 4 1.85 3.76 70
Forbs
N P A chillea millefolium Common Yarrow 2 1 0.15 0.30 10
N P Alli�textile Wild Onion 1 1 1 0.15 0.30 15
N A Alyssum alyssoides Pale Madwort 3 1 1 2 3 2 0.60 1.22 30
N A Alyss� desertctry Desert Alyssum 1 2 2 2 1 3 2 2 0.75 1.52 40
N P Aster sp. Aster 1 0.05 0.10 5
N P Ast-agalus tenellus Looseflower Milkvetch 1 2 0.15 0.30 10
I A Camefina microcarpa Littlepod False Flax 1 0.05 0.10 5
X P Cifsium ar ense Canada Thistle 1 0.05 0.10 5
N A Collinsia p�vibora Blue-eyed Mary 1 2 0.15 0.30 10
N P Crepes acuminata Taperbp Hawksbeard 1 2 0.15 0.30 10
N A Descurairaa pinata Pinnate Tansymustard 1 1 2 1 0.25 0.51 20
N P heliomefis multWora Showy Goldeneye 1 0.05 0.10 5
N P Linum ngdum Stiffstem Flax 1 1 1 0.15 0.30 15
N P Lupins caudatus Tailcup Lupine 1 0.05 0.10 5
N A Microsteris gracilis Slender Phlox 1 0.05 0.10 5
N P Penstemon sbictus Rocky Mtn.Penstemon 1 0.05 0.10 5
N P Phloxh000ii Hood Phlox 1 2 2 0.25 0.51 15
N P Phloxlongifolia Longleaf Phlox 1 2 2 1 1 1 0.40 0.81 30
I A Ranunculus tesbculata Curveseed Butterwort 1 3 1 1 0.30 0.61 20
N P Solidago mollis Velvety Goldenrod 2 6 2 0.50 1.02 15
N P Sphaeralcea coccinea Scarlet Globemallow 3 0.15 0.30 5
N P Stenotus a=enoides Thrifty Goldenweed 3 1 1 3 1 3 0.60 1.22 30
I A Tl✓aspi ar ense Field Pennycress 6 2 5 2 6 1.05 2.13 25
Sub-Shrubs
N P Qiberrezia s�obrae Snakeweed 3 1 1 4 2 5 9 1 10 5 8 2.45 4.97 55
N P Kfaschenimikovia lanata Winterfat 1 0.05 0.10 5
Shrubs&Trees
N P Amelandaer alnifolia Servicelberry 1 2 4 2 0.45 0.91 20
N P Artemisia lridentata Big Sagebrush 13 5 2 3 9 1 11 2 6 2 4 6 1 9 11 8 4.65 9.44 80
N P Chrysofhamnus nauseosus Rubber Rabbitbrush 19 0.95 1.93 5
N P Chrysofhamnus viscidl§orus Low Rabbitbrush 10 7 2 18 1 2 8 4 3 10 3.25 6.60 50
N P OpunbapolyacanMa Plains Pricklypear 2 0.10 0.20 5
N P Pianos virgiana Chokecherry 3 0.15 0.30 5
N P Symphoncafpos rotundifolius Roundleaf Snowberry 3 2 3 5 7 4 7 5 4 2.00 4.06 45
N P Moss 1 2 1 1 3 1 1 0.30 0.61 15
Mean
Total Plant Coverl 35 56 28 45 34 40 61 43 42 45 74 40 42 77 36 29 76 33 77 72 49.25
Roc 9 1 1 2 2 �10 1 3 2 0 0 5 5 0 11 1 0 1 0 0 2.70
Litter 29 18 50 50 44 43 36 42 48 50 21 30 12 22 28 24 23 41 18 18 32.35
Bare ground 27 25 21 3 20 7 2 12 8 5 5 25 41 1 25 46 1 25 5 10 15.70
Total Perennial Coverl 31 27 21 36 30128 29 30 22 27163 38 38 28 36126 31 33 47 461 33.35
Number of Native Perennial Grasses>30/oRel.Cover=3 N.Pern. Count=14
Diversity Number of Native Perennial Forbs>3%Rel.Cover=0 Forbs Percent=5.79
Plant Cover Mean=49.25 t=1.33 n=20
Sample Adequacy Calculations
Variance= 297.78 nm;,,=21.64
N=Na0ve,I=Introduced,X-Noxious A=Annual,B=Biennial,P=Perennial