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Permeability of the Barx soil is moderate. Available water capacity is high. Effective rooting <br />depth is 60 inches or more. Runoff is slow and the hazard of water erosion is slight. An <br />average of 13 to 23 inches of suitable topsoil is available for salvage from Barx soil areas. <br />The Progresso loam is classified as a fine, loamy, mixed, Mesic Ustollic Haplargid. These soils <br />are located on old terraces and mesas, and are moderately deep and well drained soil formed in <br />alluvium derived predominantly from sandstone. Typically, the surface layer is reddish brown <br />loam 7 inches thick. The subsoil is reddish brown clay loam 17 inches thick. The substratum <br />is whitish sandy loam 12 inches thick. Hard sandstone is at a depth of 36 inches. In some areas <br />the surface layer is fine sandy loam. <br />Permeability of the Progresso soil is moderate and available water holding capacity is moderate. <br />Effective rooting depth is 20 to 40 inches. Runoff is rapid and the hazard of water erosion is <br />high. An average of between 9 and 13 inches of suitable topsoil is available for salvage from <br />Progresso soil areas. <br />The Pinon loamy are classified as loamy, mixed, Mesic lithic Ustollic calciorthids. These soil <br />are located on edges of mesas, benches and escarpments and is a shallow and well drained soil <br />formed in residuum derived from interbedded sandstones and shales. Typically, the surface <br />layer is brown loam about 5 inches thick. The underlying material to a depth of 16 inches is <br />pinkish white loam. Hard sandstone is at a depth of 16 inches. <br />Permeability of Pinon soil is moderate and the available water holding capacity is very low. <br />Effective rooting depth is 10 to 20 inches, runoff is moderate and hazard of water erosion is <br />high. Between 9 and 14 inches of suitable topsoil is available for salvage from Pinon soil areas. <br />Paradox fine sandy loam is located on alluvial fans and narrow alluvial valley floors. This deep, <br />well drained soil is formed in alluvium derived dominantly from sandstone. Typically, the <br />surface layer is red fine sandy loam 5 inches thick. The upper 14 inches of the underlying <br />material is red fine sandy loam. The lower part to a depth of 60 inches is red loam. <br />An average of between 23 and 66 inches of suitable topsoil is available for salvage in the <br />Paradox soil areas. <br />Vegetation, Wildlife and Land Use <br />Four vegetation communities are presently found in the proposed permit area: Upland sagebrush, <br />Juniper-Pinon woodland, grassland and disturbed grassland. The Native Grassland reference <br />areas will apply to all of the Native Grassland community, mapped in 1991 and 1992. The <br />Sagebrush Rangeland community mapped in 1991 (Mining Area Nos. 1 and 2), was matched to <br />SREF A. Therefore, this reference area alone will be used to determine revegetation success <br />for all disturbed Sagebrush Rangeland areas mapped in 1991 and disturbed by Mining Area Nos. <br />1 or 2. Sagebrush Rangeland community areas mapped as a part of the 1992 study and disturbed <br />by Mining Area No. 3 will be assessed for revegetation success using SREF A and SREF B, as <br />described in the baseline report. Finally, the Juniper-Pinon woodland community will be <br />assessed for revegetation success using the Sagebrush Rangeland reference area scheme. The <br />1991 areas (Mining Areas Nos. 1 and 2), can be matched to SREF A. The 1992 areas, (Mining <br />7 <br />