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1 -- <br />' /~' • Thh s9(~Informatlon h not site <br />,/ sped nsite investigation, <br />testing and analysis by competent <br />C personnel is needed before construct a: 3g <br />• lion or other engineering use of soils_ <br />P100--Sedillo cobbly sandy loam, 4 to 25 percent slopes. ~~~s <br />deep, well drained soil is on tan terraces. It formed in calcareous <br />gravelly and cobbly alluvium. In several areas it formed in lanrlsl~•j2 <br />deposits. The native vegetation is mainly grasses and scattered <br />pinyon and juniper. elevation is 5,700 to 6,300 feet. The average <br />annual precipitation is I3 to IS inches, the average annual air <br />temperature is 48 to 50 degrees F, and the average frost-free periotl <br />is 130 to 160 days. <br />Typically, the surface is covered with 20 to 50 percent pebGles, <br />cobbles, and stones. The surface layer is brawn cobbly sandy loam <br />about 5 inches thick. The subsoil is very gravelly sandy clay loam <br />about 4 inches thick. The underlying material to a depth of 60 inches <br />• is very gravelly sandy loam. The soil is mildly alkaline to a depth <br />of 9 inches and moderately alkaline below that depth. Some soils on <br />landslide deposits have a bouldery surface. <br />Included in this unit is about 10 percent shallow Rizozo channery <br />loam on ridges and 5 percent Neville fine sandy loam in delineations <br />on landslide deposits. Neville soils do not have a developed subsoil <br />and have a reddish hue. <br />Permeability of this Sedillo 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 slight to very <br />high. <br />This unit is used for rangeland, wildlife habitat, and <br />noncommercial woodland. <br />• <br />'7 <br />