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• Ru(c 2: Permits <br />gram. Sample adequacy will be calculated in the field using the Snedecor-Cochran sample <br />adequacy formula described above. <br />Data Analysis <br />Data analysis methods for evaluating success will use a 90 percent statistical confidence interval <br />for total production and total cover using aone-sided T-test. Total vegetative production and total <br />non-stratified cover for revegetated areas will be at least 90 percent of identically composited <br />reference area data. Production includes the current year's above-ground biomass growth of <br />herbaceous vegetation only. No woody production will be collected. Cover sampling can include <br />basal and canopy cover. Basal cover is determined by whatever the vertical hit is closest to the <br />ground plane. <br />LCC proposes to establish a minimum density of 500 shrubs per acre on revegetated oak/pinyon <br />pine cotttmunities. This density is proposed to enhance wildlife habitat, but not adversely affect <br />grazing capacity or forage availability for livestock. Shrub seed is included in the seed mixture <br />proposed for the oak/pinyon community type. Shrubs will also be established in the grassland azea <br />of the surface mine in shrub plots. A shrub standard of 500 stems per acre will also be applied <br />to those shrub plot areas. Species proposed for planting correspond to the species which aze <br />conspicuous components of the-pre-mine communities and can be expected to succeed on the post- <br />• Honing landscape. This standazd is not intended to match the pre-mine community nor the historic <br />record, however, it was established to provide a shrub component to the revegetated community <br />which would be consistent with the regional setting, long-term reclamation goals, and reclamation <br />requirements of management agencies. Gambel oak is not proposed for planting because seed is <br />difficult to acquire, seeds are too large for most seeding equipment, and success of this species <br />from seed is low, however, this species may be transplanted. Pinyon pine is not proposed for <br />planting because seed is difficult to acquire and success of this species from seed is low. <br />Species diversity data obtained from the cover data collected from the revegetated areas will be <br />compared to a set standard proposed by LCC. The standard for revegetated grassland and <br />oak/pinyon pine communities would be to have two perennial cool season grasses and one <br />perennial warm season grass comprise from 5 to 30 percent each and one perennial forb of 5 <br />percent of the overall species diversity. A shrub component will also be included in both <br />reclaimed vegetation types. Table 2.05.4-5 presents a summary of the success standards for <br />reclamation. <br />• <br />T~-D Z <br />PERMIT.mVurc 9. 1999 2.05-74 (revised 6/9/98) <br />