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-47- <br /> For the disturbed areas other than the new coal refuse disposal area, a <br /> reference area was located for each dominant affected area vegetation type. <br /> The three vegetation types for which reference areas were developed were aspen <br /> woodland, aspen shrubland, and spruce/fir parkland. However, during the <br /> course of the review, it was determined that the data collected from the <br /> undisturbed vegetation adjacent to the disturbed areas would be more <br /> representative than the reference areas. This data was collected on a much <br /> larger area than the reference area data. Therefore, it should be more <br /> representative of the disturbed areas than the reference area data. <br /> Revegetation success standards based on existing adjacent vegetation are <br /> required for the rock tunnel complex, old coal refuse pile, the preparation <br /> plant area and the mine benches. The aspen shrubland vegetation type was <br /> chosen as being representative of the preparation plant and the coal refuse <br /> pile; the aspen woodland vegetation type was chosen as being representative of <br /> the rock tunnel complex; and the spruce/fir parkland vegetation type was <br /> chosen as being representative of the mine benches. <br /> The revegetation success standards for each area are as follows: <br /> 1) Areas to be compared to the aspen woodland vegetation type: <br /> Herbaceous cover - 56.3% <br /> Herbaceous production - 67.9 g/m2 <br /> Woody plant density - 100 trees, 500 shrubs/acre <br /> Species diversity - 2 cool season grass species and 6 forb species <br /> more than 3% relative cover <br /> 2) Areas to be compared to the aspen shrubland vegetation type: <br /> Herbaceous cover - 60.8% <br /> Herbaceous production - 61.9 g/m2 <br /> Woody plant density - 100 trees, 500 shrubs/acre <br /> Species diversity - 2 cool season grass species and 7 forb species <br /> more than 3% relative cover <br /> 3) Areas to be compared to the spruce/fir parkland vegetation type: <br /> Herbaceous cover - 46.8% <br /> Herbaceous production - 56.9 g/ <br /> Woody plant density - 100 trees, 500 shrubs/acre <br /> Species diversity - 5 cool season grass species and 8 forb species <br /> more than 3% relative cover <br /> The species diversity standard was calculated using the relative cover <br /> method. By this r detrmines number <br /> species diversity standard. <br /> enirelative cover of 3 <br /> percent or greats <br /> As part of the post-mining land use, the U.S. Forest Service has requested <br /> that the haul roads be left following downgrading to access roads. The haul <br /> ti roads will be downgraded <br /> area iscess roads not neededsforting in the haul roads. <br /> 1988. <br /> Therefore, a re <br /> a, <br />