2010-12-08_PERMIT FILE - C1981008A ‎(14)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• Doc Name: Vegetation Information
• Section_Exhibit Name: Section 2.04.10 Vegetation Information NH2 Mine Area
• Media Type: D
• Archive: Yes

Table 2.04.10 -4
Total Acreages of the Various Vegetation Types
Found In the New Horizon 2
Study Area and mine Disturbance Area - 1987
5.2 Irrioated Pasture Type - 1987 (IP) The irrigated pasture represents lands intermediate
between the remnant sagebrush types (generally a former pinyon juniper woodland site) and
the more intensively managed irrigated hayland type. Depending on the objectives of the land
manager or the level of management applied, lands that may be adapted to hayland
production or lands that are only slightly more adapted than the sagebrush type for pasture
production are included.
As anticipated, total vegetative cover was high at 72 percent (Table 2.04.10 -5) with litter
averaging 23 percent, for an average total ground cover of 95 percent. Bare ground averaged
only five percent. Total vegetation and litter combined would most likely have approached 100
percent if not for the affects of grazing pressure in the pastures. Consistent with the
management and use of these lands, perennial graminoids dominated at 43 percent of the
vegetative cover while perennial forbs accounted for nearly all of the remaining vegetative
Revised September 2010 (PR 06) 2.04.10 -28
1987 - Study
Area
Disturbance Area
Veoatation Type
Acreaoe
% of Total
Acreaoe
% of Total
Sagebrush
43.9
7.1
25.52
7.68
Swale /Drainage
83.4
13.5
54.74
16.48
Irrigated Pasture
194.1
31.4
68.76
20.71
Irrigated Pasture Hayland
97.5
15.8
130.86
39.41
Irrigated Cropland
102.4
16.6
25.02
7.53
Farmsteads /Disturbed /Roads79.8
12.9
23.67
7.13
Ponds
5.6
0.9
2.62
0.79
Orchards
11.1
1_8
0.89
0.27
Total
617.8
100.0
332.08
100.0
5.2 Irrioated Pasture Type - 1987 (IP) The irrigated pasture represents lands intermediate
between the remnant sagebrush types (generally a former pinyon juniper woodland site) and
the more intensively managed irrigated hayland type. Depending on the objectives of the land
manager or the level of management applied, lands that may be adapted to hayland
production or lands that are only slightly more adapted than the sagebrush type for pasture
production are included.
As anticipated, total vegetative cover was high at 72 percent (Table 2.04.10 -5) with litter
averaging 23 percent, for an average total ground cover of 95 percent. Bare ground averaged
only five percent. Total vegetation and litter combined would most likely have approached 100
percent if not for the affects of grazing pressure in the pastures. Consistent with the
management and use of these lands, perennial graminoids dominated at 43 percent of the
vegetative cover while perennial forbs accounted for nearly all of the remaining vegetative
Revised September 2010 (PR 06) 2.04.10 -28