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SOILS DESCRIPTION EXHIBIT 1 <br /> [Rules 6 Rep§6.4.9] <br /> CONSTRUCTION MATERIAL PERMIT N9 M 2001-.......... <br /> REGULAR 112 OPERATION <br /> •WEIMER ONE GRAVEL" <br /> January 2001 <br /> [a] Soils at the site are named and described by the soils map and narrative of the Natural Resources <br /> Conservation Service(NRCS, formerly SCS)as reiterated below. <br /> BARX FINE SANDY LOAM (1 TO 3 % slopes) Map Symbol 14 <br /> The Barx soil is deep and well drained on terraces and mesas. It formed in alluvium from <br /> sandstone. Typically, the surface layer is fine sandy loam 5 inches thick. The subsoil is <br /> sandy Gay loam 18 inches thick. The substratum to a depth of 74 inches is loam. <br /> Permeability is moderate and the available water capacity is high. Surface runoff is slow <br /> and the hazard of water erosion is slight. The effective rooting depth is 60 or more inches. <br /> CLAPPER—USTIC TORRIORTHENTS (5 to 20 % slopes) Map Symbol 36 <br /> This map unit is 35% Clapper soil and 35% Ustic Torriorthents soil. <br /> The Clapper soil is deep and well drained on terraces, mesas and breaks. It formed in <br /> alluvium from igneous rock. Typically, the surface layer is loam 11 inches thick. The upper <br /> 9 inches of the underlying material is cobbly loam. The lower part to a depth of 60 inches is <br /> very cobbly loam. Permeability is moderate to very rapid and the available water capacity is <br /> moderate. Surface runoff is medium to very rapid and the hazard of water erosion is high to <br /> very high. The effective rooting depth is 60 or more inches. <br /> The Ustic Toriorthents soil is shallow to deep and well drained on mesas, terraces, and <br /> breaks. It formed in residuum, alluvium, and colluvium from interbedded sandstone and <br /> shale. Typically, the surface layer is clay loam 4 inches thick. The underlying material to a <br /> depth of 31 inches is Gay loam. Permeability is moderately slow and the available water <br /> capacity is moderate. Surface runoff is medium to very rapid and the hazard of water <br /> erosion is moderate to very high. The effective rooting depth is 10 to 60 inches. <br /> The sand and gravel resources to be mined at this site are obviously best described as the Clapper, <br /> Map Symbol 36 soils, only they have been found to have up to 189 inches of sandy, gravely alluvial <br /> deposits beneath 1 to 3 feet of the described surface and sub-surface soils. The sub-surface soil has a <br /> high content of powdered caliche. Topsoil is confined to about a half foot of silty clay loam. <br /> Existing vegetation at the site is described by NRCS as "Stony ,Foothills" Range Site. Grasses <br /> include primarily blue grama, galleta, bottlebrush squirreltail, and three-awn. Forbs and shrubs <br /> include big sagebrush, broom snakeweed, ephedra, yucca, senecio, prickly pear, annual mustard, and <br /> astragulas. Pinion pine and Utah juniper trees border just outside the southeast periphery, primarily <br /> at the crests of the bench slopes and minor draws. Big sage is the predominant plant on undisturbed <br /> areas of the site, yet only attains an average height of up to 18 inches, apparently due to the low <br /> moisture content and anemic soils. <br /> O <br /> 23 <br />