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PAONIA SOIL SURVEY AREA MAPPING UNIT: 80-C <br /> SOIL MAPPING DESCRIPTIONS PUBLISHED UNIT: 24 <br /> Mapping Unit: Cliffdown gravelly loam <br /> Position: Terraces and outwash fans <br /> Drainage: Well drained, unless influenced by foreign sources of water. <br /> Slope: 0 to 12 percent <br /> Soil Profile: Texture Thickness Permeability <br /> Surface: Gravelly loam 0-9 inches Moderately rapid <br /> ( .6 - 2.0"/hr.) <br /> ' Subsoil: Loam 9-60 inches Moderately rapid <br /> ( 2.0 - 6.0"/hr.) <br /> Underlying material is very gravelly sandy loam and is over extremely gravel- <br /> ly loam. Bedrock is greater than 60 inches. <br /> Available water capacity is 3.5 inches for the 60 inch rooting depth. <br /> Water table depth is greater than 6 feet. <br /> f Erosion Hazard: Slight from wind, moderate from water. Frequency of flooding is <br /> none. <br /> Capability Unit: VIIe nonirrigated. <br /> Range Site: Loamy saltdesert <br /> Normal production is 700 lbs./acre dry weight forages <br /> Other features: <br /> Runoff is medium. <br /> Soil is moderately alkaline below 9 inches. <br /> Soil pH is 7.4 to 8.4 <br /> Salinity is less than 2 Mmhos/cm <br /> Risk of corrosion is high for uncoated steel and low for concrete. <br /> Low frost action potential. <br /> Good for roadfill. <br /> Poor for sand, wilth excess fines and fair for gravel with excess fines. <br /> A poor source of topsoil with small stones. <br /> The following describes the severity of restrictive soil features for pro- <br /> posed uses: <br /> Septic tank absorption tanks Slight <br /> Sewage lagoon areas Severe Seepage, small stones <br /> Sanitary landfill Severe Small stones <br /> Daily cover for landfill Poor Small stones <br /> Shallow excavations Severe Small stones and Cut bankk <br /> cave <br /> Dwellings w/basements Slight <br /> Dwellings w/o basements Slight <br /> (over) <br />