2011-12-21_REVISION - C1991078

• Permit No: C1991078
• IBM Index Class Name: REVISION
• Doc Date: 12/21/2011
• Doc Name: Bond Release Application
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Type & Sequence: SL3
• Email Name: MLT
• Email Name: SB1
• Media Type: D
• Archive: No

Table 1 Hamilton Mine - Vegetation Cover - 2010 & 2011
Average Cover Summary
Percent Ground Cover Based on Point - Intercept Sampling
Area ->
Sanpk Year ->
Reclaimed Areas
Reference Areas
Mine Area No. 1
Mine Area No. 3
Sagebrush A
Sagebrush B
Grassland
2010 2011
2010 2011
2010 2011
2010 2011
2010 2011
Grasses and Grass -likes
N P Agropyron dasystachyum Thickspice Wheatgrass
0.32
-
-
-
-
-
-
-
-
-
N P Agropyronsmithi/ Western Wheatgrass
0.08
0.21
-
-
-
0.20
2.67
2.53
-
-
N WP Arsbda purpurea Purple Threeawn
-
-
0.24
0.40
-
-
-
-
-
0.27
N WP Routehua gractis Blue Grama
4.04
9.04
5.12
12.08
0.47
1.67
0.07
1.40
3.93
4.00
I A Bromus tectorum Cheatgrass
2.36
2.46
1.40
2.04
0.13
-
0.73
0.13
0.73
0.80
I P E/ymusjunceus Russian Wiktrye
0.64
0.79
-
-
-
-
-
-
-
-
N WP Hi/aria jamesii James' Galleta
0.76
0.38
1.08
1.16
3.00
0.27
0.87
0.53
0.53
2.67
N P Oryzopsshymenoides Indian Ricegrass
5.12
4.04
4.12
3.00
0.60
1.00
0.40
0.67
0.13
0.13
N P Sitanan hystrix Bottiebrush Squirreltail
1.92
0.33
2.24
1.48
3.27
0.53
4.33
3.00
-
0.07
N WP Sporoboluscryptandrus Sand Dropseedl 1.88
9.42
0.72
0.33
0.53
0.87
0.53
N P Stipa comata Needle and Thread 8.48
3.71
3.68
3.04
1.33
0.87
0.07
16.60
14.27
Forbs
NW P Acroptilon repens Russian Knapweed
0.52
0.04
-
-
-
-
-
-
-
I P Asbagaluscker Chickpea Mdkvetch
-
0.04
0.04
-
-
-
-
-
-
-
N A Descurainia pnnata Western Tansymustard
-
0.13
-
-
-
-
-
-
-
-
N P Erigeron concnnus Shaggy Fleabane
-
0.13
0.16
-
0.40
0.47
0.33
0.40
0.13
-
N P Eriogonum sp. Buckwheat
-
-
-
-
-
-
-
-
0.20
0.07
I A Erodium crcutarium Redstem Storksbill
0.12
-
0.12
-
-
-
-
-
-
-
N A Helanthus annuus Common Sunflower
0.08
-
-
-
-
-
-
-
-
-
N P Heterotheca vi /hsa Hairy False Goklenaster
-
0.25
-
-
-
-
-
-
-
-
N P Koche americana Green Molly
-
-
-
-
-
-
-
-
-
0.07
N P Lepidium montanum var. m. Mountain Pepperweed
-
0.04
-
-
-
-
-
-
-
-
N P Lygodesmiajuncea Rush Skeletonplant
-
-
-
-
-
-
-
-
-
0.07
N P Phlox hngifo /ia Longleaf Phlox
-
-
-
-
-
-
-
-
-
0.07
I A Porhr/aca oleracea Purslane
-
-
-
-
-
-
-
0.13
-
-
I A Ranuncu /us testicubtus Curveseed Butterwort
0.04
-
-
-
0.07
-
-
-
-
-
I A Sa/o/a australls Russian Thistle
1.88
2.25
8.16
7.00
-
-
-
-
-
-
I A Saynthrium altssrmum Tall Tumblemustard
-
0.08
0.08
0.12
-
-
-
-
0.07
0.07
N P Sphaerakea coccinea Scarlet Globernallow
4.96
3.29
3.64
2.24
-
0.47
0.07
-
1.20
0.80
Unidentifiable
-
-
0.04
-
-
-
-
-
-
-
Sub- shrubs
Winterfat
0.76
2.29
0.2
0.72
-
-
N P Guberreziasarothrae Broom Snakeweedl
0.16 1
1.04
I 0.12
0.12
I 0.471
1.47
I 0.13
1.53
0.53
I 1.47
Shrubs & Cacti
N P Artemisia tiidentata var. wyo. Wyo. Big Sagebrush
0 12
0.46
0.32
0.20
12.40
12.93
9.53
9.20
-
-
N P Atripkx canescens Fourwing Saltbush
1.44
1.04
0.92
1.40
-
-
0.13
0.13
-
0.07
N P Atriplexgardneri Saltbush
0.04
-
-
-
-
-
-
-
-
-
N P Opuntia po/yacantha Prkkly -Pear_ -
-
-
-
_ 0.60
0.53
0.13
-
-
0.07
Total Plant Cover
35.72
41.46
32.40
35.72
22.73
20.73
19.93
20.60
24.07
25.47
Rodc
0.36
1.46
1.40
3.88
0.53
0.67
0.53
1.07
2.93
2.47
Litter
13.48
16.83
16.16
22.40
23.13
19 40
29.13
30.80
22.73
23.53
Bare ground
50.44
40.25
50.04
38.00
53.60
59 20
50.40
47.53
50.27
48.53
Total Perennial Cover (excluding noxious weeds) 30.72 3654 22.60 26.56 I 22.53
20.73 19.20
20.33 23.27 24.60
Summary by Lifeform:
Perennial Warm Season Grasses
6.68
18.83
6.44
14.36
3.47
2.27
1.47
2.80
4.47
7.47
Perennial Cool Season Grasses
16.56
9.08
10.04
7.52
5.20
2.60
7.40
6.27
16.73
14.47
Annual Grasses
2.36
2.46
1.40
2.04
0.13
-
0.73
0.13
0.73
0.80
Perennial Forbs
4.96
3.75
3.84
2.24
0.40
0.93
0.40
0.40
1.53
1.07
Annual & Biennial Forbs
2.12
2.46
8.40
7.12
0.07
-
-
0.1.3
0.07
0.07
Noxious / Aggressive Weeds
0.52
0.04
-
-
-
-
-
-
-
-
Sub- Shrubs
0.92
3.33
1.04
0.84
0.47
1.47
0.13
1.53
053
1.47
Shrubs & Cacti
1.60
1.50
1.24
1.60
_ 13.00
13.47
9.80
9.33
-
0.13
Sample Adequacy Calculations
Mean=
35.72
41.46
32.84
35.72
23.00
20.73
20.27
20.60
24.20
25.47
Variance=
35.04
54.69
13.97
23.13
29.71
16.64
18.64
8.40
22.74
21.70
n=
25
24
25
25
15
15
15
15
15
15
n„,
4.77
5.54
2.25
3.15
10.16
7.00
8.21
3.58
7.03
6.05
CEDAR CREEK ASSOCIATES, Inc.
Page A - 1 Hamilton Mine - 2011 - Appendix A
Phase III Bond Release Evaluation