REP52626

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 4/6/2007
• Doc Name: 2006 AHR & ARR Section 9 Exhibit 9A to Section 11
• From: Colowyo Coal Company
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Table AB-9 Colo o - Ve etation Cover - 2006
~~
5160
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~ .- 4_ereepi~ii5anfiplir}g
T2nsectNo.-> 1 2 3 4 5 Average Relative
Fre
q.
Grasses and Grass-likes Cover Cover

N P gropyron yum is pi e W eatgrass 3 11 1 4. 8.57 100
N P Agropyron ripanum Streambank Wheatgrass 2 3 6 1 2 2.80 5.71 100
I P Agrupyronsidericum Siberian Wheatgrass 14 15 9 1 25 12.80 26.12 100
N P Agropyronsmitl~ii Western Wheatgrass 2 2 0.80 1.63 40
N P Agropyronspica[um Bluebunch Wheatgrass 2 0.40 0.82 20
N P Agropyron badrycau/um Slender Wheatgrass 5 4 4 3 3.20 6.53 80

I
P
6ianusinemris
Smooth Brome
14
6
3
1 _
5
5.80
11.84 _
100
I A Bromusjapnnicus ]apanese Brome 2 1 2 3 3 2.20 4.49 100
N P Bromusmarginatus Mountain Brome 2 3 4 1 2.00 4.08 80
I P Dactylisg/ome2ta Orchardgrass 2 2 4 1 3 2.40 4.90 100
N P E/ymuscinereus Basin Wik7rye 2 5 4 1 8 4.00 8.16 100
I P E/ymusjunceus Russian Wildrye 3 4 5 2.40 4.90 60
N P T-estuca avina/saximonbna Hard Fescue 2 0.40 0.82 20
I P Pray p2Leixsis Kentucky Bluegrass 2 2 0.80 1.63 40
Forbs
P i anu astern arrow
I P A.~rdga/usdce~ CicerMilkvetch 1 2 4 8 3.00 6.12 80
I B Larnxa serrio/a Prickly Lettuce 1 0.20 0.41 20
N P Linum /ewisii Lewis Flax 1 1 1 2 1.00 2.04 80
I A Sa/,w/a aresri-d/is Russian Thistle 1 0.20 0.41 20
Shrubs, Cali & Trees
one

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a.- ~ ..-.

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can
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Total Plant Cover 53 52 45 38 57 49.00
Rock 0 1 0 0 0 0.20
Litter 36 45 44 51 3B 42.80
Bare ground 11 2 11 11 5 8.00

. Total Perennial Cover
......
,
u
..
- 50
.
.. 50 43 35
- .. 54
_ -. ....- 46.40
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No. of Perennial Grasses (3% - SO% Rel. Cover) = 9 _
DLK
2~51ty.~.
~~`
, No. of Perennial Forbs ( 3% - 50% Rel. Cover) = 1
Samplehgdequ "' Plant Cover Mean = 49.00 t = 1.5332 n = 5
CaluilatiO4s~ . ,~' Variance = 56.50 nmi„ = 5.53
AB-11