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(hlssoila inforrnation is I~,r Slia <br />.. • ~ • specillc. Onsite investiEation, <br />Oesting and analysis by competent <br />personnel Is needed before construc• y ~ 89 <br />tion or other engineering use of soils. <br />39--Granile, very gravelly sandy loam, 25 to 45 percent slopes. <br />this deep, well drained soil is on mountainsides. It formed ~n <br />residuum an colluvium derived dominantly from sandstone. The native <br />vegetation is mainly conifers. Elevation is 6,000 to 9,200 feet. The <br />average annual precipitation is 16 to 20 inches, the average annual <br />air temperature is 40 to 44 degrees F, and the average frost-free <br />period is 50 to 75 days. <br />Typically, th• aurfae• is covered with a mat of fir litter about 2 <br />inches thick. The surface layer is dark grayish brown very gravelly <br />sandy loam about 2 inches thick. In a few areas the surface of the <br />soil is stony. Tha subsurface layer is mainly brown very gravelly <br />sandy loam about 17 inches thick. Th• subsoil is extremely gravelly <br />sandy clay loam to a depth of 60 inches or more. The soil is neutral <br />to a depth of 2 inches, strongly acid to a depth of 32 inches, and <br />~-- slightly acid below that depth. The texture of the surface layer in <br />some areas is very cobbly sandy loam. <br />Included in this unit is about 10 percent soils moderately deep to <br />sandstone or siltstons and otherwise similar to this Granile soil. <br />These soils era near ridges and on steeper, upper side slopes. Also <br />includes is about S percent sandstone rock outcrop on the ridges and <br />upper side •lopea. <br />Permeability of this Granile soil is moderate. Available water <br />capacity is low. Effective rooting depth is 60 inches or more. <br />Runoff is rapid, and the hazard of water erosion is very high. <br />This unit is used for woodland, wildlife habitat, and recreation. <br />I <br />~, . <br />r, <br />/y~ <br />