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Staimr - 2.04.9 The pemteabihtyof the surface and subsurface are moderate (0.6-2.0"/hr.) and moderately slow (0.2- 0.6"/hr.) respectively and available water capacity is low. Surface runoff is rapid. Erosion hazard is moderate to high from water and slight from the wind. These soils typicallysupport native vegetation consisting mainly of Gambel oak, serviceberry, snowberry, big sagebrush, wheatgrasses, pine needlegrass, needle and thread, and bromes. Ass«iated uses include Guest«k grazing (limited by steepness), wildlife habitat, and recreation. Shrink-swell potential u moderate to high. Tote tick of corrosion is high for uncoated steel and low for concrete. Potential frost action is low. Kech-Rock outcrop complex - 'Iltis soil type «curs on well-drained upland slopes and ridges and forms in residuum and 1«ally transported sediment derived from sandstone and interbedded shales. The Kech soil makes up about 60 percent of the complex and u on steep sideslopes and escarprnenu. The R«k outcrop makes up about 20 percent and is on canyon walls or escatpmenu on mesas and benches. Small areas of other soils make up the rert+~~~~rg 20 percent of this complex For the Kech soil, the surface layer is a loam ranging from 0 to 4 inches in thickness. The subsoil u a clay loam about 15 inches in thickness over sandstone at a depth o[ about 19 inches. The permeability of the surface and subsurface soils are moderate (0.6-2.0"/hr.) and moderately slow (0.2-0.6"/hr.) respectively and available water capacity is low. Surface nmoff is rapid. The erosion hazard for this soil is high from water and slight to moderate from wind. These soils typically support native vegetation consisting mainly of pinyon, juniper, big sagebrush, wheatgtazses, Junegrass, Indian ricegrass, and squirreltail. Ass«iated uses include Guest«k grazing, wildlife habitat, recreation, and limited timber production (pinyon wood and nut harvesting). The shrink-swell potential is low to moderate. The risk of corrosion is high for uncoated steel and low for concrete. Potential frost action is low. Tomorthenu-R«k outcrop, sandstone, complex -The soil is positioned on the canyon sideslopes, • mountain sideslopes, and r«k escarpmenu and forms in weathered sandstone. Tomorthenu soils make up about 60 percent of the complex and «cur on flatter slopes and lower slope areas. R«k outcrops make up abou[ 30 percent of the complex and dominate the steep upper slope areaz. Small areaz of other soils make up the re~+~+~~~g 10 percent of chit complex For the Tomorthenu soils, the surface layer is a stony loam of variable thickness overlying a loam or sandy loam with a significant r«k fragment content. Depth to sandstone bedr«k varies from 10 to over 60 inches, with deeper soils at the tce of benches or valley sideslopes. Iatge tacks, boulders, and surface exposures of bedr«k ate common throughout the soil profile, with r«k exposures ranging from 30 to 90 percent. Permeability are moderate to high and available water capacity is low to moderate. Surface runoff is rapid. Erosion hazard is slight from the wind and low to moderate from water, with surface stoniness limiting erosion potential Because of steepness and nxk exposures, vegetation u dominantly native and adaptive grasses with scattered trees and shmbs. Ass«iated uses include wildlife habitat, and recreation. Shrink-swell potential is moderate to high. The risk of corrosion u high for uncoated steel and low for concrete. Potential frost action u low. Tomorthent-I-iaplargids complex, very stony -The soils in this complex are nearly level to strongly sloping and are on tce slopes and small fans and narrow, winding valleys. They are fottned in accumulations of l«ally transported stony materials derived from a variety of r«k types. Tomorthenu soils make up about 55 percent of this complex and are lower on the tce slopes than the Haplargids soils and are in the bottom of small drainage ways. Haplargids soils make up about 40 percent, are more sloping than Totriorthents, and are on tce slopes and faro. Small areas of other soils make up the remaining 10 percent of this complex The 7orriotthenu soils have hale or no profile development, with surface layers varying from sandy loams to clay loams and underlying layers of sandy loam, loam, or clay loam with cobble, stone and boulders throughout the profile. • R«k fragments exceed 35 percent. Profile development for the HapL-trgids soils is weak to moderate, with a surface layer of very stony loam or sandy loam and a loam, clay loam, or light clay subsoil with cobbles and stones. Rock fragmenu exceed 35 percent. PR04 2.04-89 Revised August 2000