2001-12-11_PERMIT FILE - C1994082A ‎(2)‎

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: TAB 04 LAND USE
• Media Type: D
• Archive: Yes

• AUM's/AC (1.81 Ac/AUM) end 1.64 AUM's/AC (0.61 Ac/AUM) for subirrigated areas. See Table
4-2 for stocking rate definitions. Based on the above stocking rates and acreages for
each type, 77.4 AUM's are available in upland pasture areas (31.6 acres), while 36.3 AUM's
are available in subirrigated pasture areas (22.2 acres).
Pastureland areas ere not managed separately from surrounding native rangeland with [he
exception of the pastureland located in Section 28 in the northern portion of the haul
road corridor (Exhibit 4-7). This parcel is isolated by surrounding cropland and roads.
In general, livestock, which may include sheep or cattle, move freely between pastureland
end adjacent native rangeland. Management of all pastureland areas is non-intensive end
maintenance of stands has not been a priority es evidenced by the age of the stands end
reinvasion of native species.
Rana eland. The predominant land uses on [he Yoast Mine permit area are rangeland and
wiLdl ife habitat. These two uses ere closely associated and occur within the same types
end acreages. Management of these lands, however, are most intensive for livestock.
Established stocking rates for classes of Livestock, tenting, water development, and
• movement or herding of livestock are management practices associated with rangeland
resources in the mine permit area.
Historically, livestock grazing in the region has centered on sheep production- The woody
dominated plant communities of aspen, mountain brush, and sagebrush are well suited to the
foraging needs of sheep and to some degree, these types are better accessed by sheep.
Lands on and adjacent to the permit areas provide spring and early summer grazing for
sheep prior [o moving to higher elevation areas [o the south. Lower elevation lands
dominated by sagebrush, similar to lends along the haul road corridor, have historically
been used es spring lambing grounds. With the decline of the sheep market in recent
years, cattle grazing has increased with grazing seasons for cattle running from late
spring through summer.
Rangeland vithin the mine permit area includes the following vegetation types: mountain
brush, sagebrush, aspen, steep mountain brush, western wheat/alkali sagebrush, mesic
drainage, alkali sagebrush/greasewood, end alkali meadow. Detailed descriptions of each
vegetation type may be found in Teb 70, Vegetation. An estimate of rangeland condition
was made based on evaluation of USDA-Soil Conservation Service (SCS) range sites
associated with the major soils types. These range sites generally correlate with the
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