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GENERAL53634
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GENERAL53634
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Last modified
8/24/2016 8:39:07 PM
Creation date
11/23/2007 8:48:07 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1984041
IBM Index Class Name
General Documents
Doc Date
10/23/2002
Doc Name
Special Use Permit
From
Eagle County Community Development
To
DMG
Media Type
D
Archive
No
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range from 10 to 20 inches. If shallow soils on steep slopes are thoroughly <br />saturated with water there is a potential for mass movement. There is little <br />evidence of recent mass soil movement in the area. <br />On-site examinations of the project area and existing mine indicate no evidence of <br />mass soil movement. On-going reclamation and revegetation efforts at the <br />existing mine appear to be successful. Replaced soil materials in place for more <br />than 10 years show no indication of mass movement. <br />Successful reclamation efforts at the existing operation have shown that the <br />indigenous soils can be utilized as a reclamation Qrowth medium. The procedure in that <br />azea has consisted of excavating soil ahead of the active mining area and stockpiling this <br />material for later use in reclamation. Successful reclamation plots have been realized at <br />the existing operation with a seed mixture consisting of Indian Rice Grass (Nezpaz), <br />Critana Thickspike Wheatgrass, Sodar Stream Bank Wheatgrass and Russian Wild Rye <br />(Salina). BLM has reserved the option to adjust or amend this seed mixture if more shrub <br />species are seen to be desirable. <br />In summary, the surface in the area can mainly be described as gypsum and <br />weathered gypsum outcroppings with intermingled areas of shallow soil accumulation. <br />The gypsum outcroppings predominate in the area as evidenced by the paucity of <br />vegetation. <br />Vegetation Information <br />Vegetation in the amended area minors that of the existing mining area. <br />Vegetative cover is sparse at best. Indigenous plant species include sagebrush, <br />greasewood, winterfat, low rabbit brush and 4-wing salt bush. Russian knapweed, <br />Russian thistle and mustard are also present to some extent. Stands of pinion and juniper <br />are located along the ridgelines - with a mixture of 60% pinion to 40% juniper. <br />As in the case at the existing mining area, vegetative cover is found to be <br />inversely proportional to the steepness of the slopes and the presence of solid gypsum <br />rock outcroppings. The predominate area of the ore body contains virtually no vegetation. <br />Juniper and pinion trees cleared ahead of the active mining area will be utilized in <br />the reclamation process. Pinion and juniper mulch cleared at the existing mine have <br />added success to re-vegetation plots. The technique has consisted of placing mulch over <br />plots graded with indigenous growth medium and then seeding the plot. The mulch has <br />shown to aid re-vegetation by providing shade for the early seedlings, helping to stabilize <br />and control erosion of the plots, and eventually adding organic nutrients back into the <br />soil. <br />BLM project review resulted in the conclusion that no threatened, endangered or <br />sensitive plant species exists in the amended area. Content of Environmental Assessment <br />CO-140-2001-064 EA concerning T&E is quoted below. <br />13 <br />
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