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X2.04 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING ACTIVITIES -- <br />MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES. <br />Soils tend to be a silty, clay type, with high shrink-swell <br />capabilities. As a result, tree and shrub species have not <br />readily invaded these sparsely covered herbaceous areas <br />(Harner-White, 1982). As much as 30~ of the area is bare ground, <br />with little rock and litter cover material. Perennial forb <br />and grass species with taproot and rhizomatous root systems are <br />favored (Harner-White, 1982). Forb species include thistle, <br />yellow sweetclover, and showy goldeye. Western wheatgrass is a <br />common grass species. <br />~~ <br />Surface facilities at the Bowie No. 1 Mine have disturbed acreage <br />in both the mixed shrub and pinyon-juniper vegetation types. <br />Reference areas for these types have been established and meet the <br />following criteria: 1) are located in areas not to be affected <br />during the life of mine; 2) are at least three acres or more in <br />size; 3) are of similar vegetation as areas currently affected or <br />to be affected in the future by the Bowie No. 1 Mine; and 4) <br />represent a diversity of slope, aspect, and soils similar to the <br />vegetation types affected. Vegetation sampling data was collected <br />from the reference areas in 1981 and 1962, and is presented in the <br />Vegetation <br />2.09.10 Vegetation Information. ( Cont'd.) <br />(4) ( Cont'd.) <br />Sparse Herbaceous Understorv: The <br />vegetation type occurs naturally in <br />No. 1 Mine at an average elevation <br />Weedy forb species comprise most of <br />occurrence of these species may not <br />abuse or overgrazing. <br />Riparian: The riparian vegetation type occurs along the major <br />creeks and streams in the permit area. The typical trees and <br />shrubs composing riparian vegetation are narrowleaf cottonwood, <br />plains cottonwood, box elder, birch, alder, hawthorn, red osier <br />dogwood, virginsbower, wildrose, and many species of willows. <br />Aspen may sometimes occur along streams as a riparian plant, <br />mainly at elevations louvr than that at which it is normally <br />found. Salt cedar occurs along rivers and streams at lower <br />elevations, below 6,000 feet. Herbaceous species include many <br />different grasses, forbs, and sedges. The specific composition <br />of herbaceous species in riparian vegetation varies considerably <br />with altitude. <br />sparse herbaceous under- story <br />small areas below the Bowie <br />>f approximately 6600 feet. <br />the sparse cover. The <br />necessarily result from human <br />Revised 08/01/84 <br />Revised 10/12/86 <br />Revised 10/01/87 <br />Revised 9/21/01 <br />I• <br />/~R- to S <br />74 <br />/j PPRU vED <br />~~z4/o ~, <br />