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180 <br />Gypsum maximum: None <br />Salinity maximum: About 2 mmhos/cm (nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Ecological site. Semidesert Sandy Loam <br />Potential native vegetation: needleandthread, <br />Wyoming big sagebrush, Indian ricegrass, sand <br />dropseed, bottlebrush squirreltail, streambank <br />wheatgrass, wormwood <br />Land capability subclass (nonirrigated): 6e <br />Typical Profile: <br />0 to 4 inches; loamy fine sand <br />4 to 47 inches; loamy fine sand <br />47 to 60 inches; fine sand <br />Minor Components <br />Soils with thick sandy clay loam subsoils and similar <br />soils <br />Composition: About 5 percent <br />Landform: Hillslopes <br />Schooner and similar soils <br />Composition: About 5 percent <br />Landform: Hills <br />Position on landform: Summit <br />Moderately deep soils over shale and similar soils <br />Composition: About 5 percent <br />Landform: Hills <br />Position on landform: Summit <br />Depth to restrictive feature: 20 to 40 inches to <br />bedrock (paralithic) <br />209-Weed sandy loam,1 to 12 percent <br />slopes <br />Map Unit Setting <br />Major Land Resource Area: 34 <br />Elevation: 6,300 to 7,400 feet (1,920 to 2,256 meters) <br />Mean annual precipitation: 13 to 15 inches (330 to <br />381 millimeters) <br />Mean annual air temperature: 42 to 45 degrees F. <br />(5.6 to 7.2 degrees C.) <br />Freeze-free period. 75 to 95 days <br />Map Unit Composition <br />Weed and similar soils: 85 percent <br />Minor components: 15 percent <br />Soil Survey <br />Component Descriptions <br />Weed soil's <br />Landform: Alluvial fans, hills <br />Position on landform: Toeslope <br />Parent material. Alluvium derived from sandstone <br />Slope: 1 to 12 percent <br />Drainage class: Well drained <br />Slowest permeability. 0.6 to 2.0 inJhr. (moderate) <br />Available water capacity: About 7.8 inches (moderate) <br />Shdhk-sw6ll potential. About 1.5 percent (low) <br />Runoff class: Medium <br />Calcium carbonate maximum: About 5 percent <br />Gypsum maximum: None <br />Salinity maximum: About 2 mmhos/cm (nonsaline) <br />--Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Ecological site: Deep Loam <br />Potential native vegetation: Wyoming big sagebrush, <br />needleandthread, western wheatgrass, prairie <br />Junegrass, Indian ricegrass, bottlebrush <br />squirreltail, common snowberry, muttongrass <br />Land capability subclass (nonirrigated): 4c <br />Typical Profile: <br />0 to 10 inches; sandy loam <br />10 to 28 inches; sandy clay loam <br />28 to 41 inches; sandy clay loam <br />41 to 60 inches; sandy loam. <br />Minor Components <br />Berlake and similar soils <br />Composition: About 5 percent <br />Ironsprings and similar soils <br />Comp6Slti6h Ab6Ut 5 percent <br />Soils with sandy loam subsoil and similar soils <br />Composition: About 5 percent <br />210-Willwood-Sheppard, cool complex,1 <br />to 12 percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 34 <br />Elevation: 5,300 to 6,000 feet (1,615 to 1,829 meters) <br />Mean annual precipitation: 7 to 10 inches (178 to <br />254 millimeters)