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• PjE =Louviers-sarcillo-Trag <br />complex, 3 to 25 percent slopes <br />setting <br />Landform: Foothills <br />Position on landscape: <br />Ridgetops, backslopes <br />Elevation: 6,500 to 7,800 feet <br />Native plants: Pinyon, juniper, <br />grass <br />Air temperature: 45 to 50 <br />degrees F, 45 to 47 in colder <br />drainages and 47 to 50 on other <br />landscapes <br />Annual precipitation: 15 to 18 <br />inches <br />Frost-free period: 80 to 130 <br />days <br />Composition <br />Louviers soil and similar <br />inclusions: 40 percent <br />Sarcillo soil and similar <br />inclusions: 25 percent <br />Trag soil and similar <br />inclusions: 20 percent <br />• Rock outcrop: 5 percent <br />Contrasting inclusions: l0 <br />percent <br />Typical Profile <br />Louviers <br />Surface layer: <br />0 to 4 inches=very channery clay <br />loam <br />Substratum: <br />4 to 13 inches=clay loam <br />13 to 16 inches=clay <br />Bedrock: <br />16 inches=soft shale, siltstone <br />Sarcillo <br />Surface layer: <br />0 to 5 inches=loam <br />Subsoil: <br />5 to 8 inches=clay loam <br />8 to 16 inches=clay <br />Bedrock: <br />16 inches=hard sandstone <br />Trag <br />• Surface layer: <br />0 to 8 inches=loam <br />Subsoil: <br />8 to 25 inches=clay loam <br />25 to 38 inches=sandy clay loam <br />Substratum: <br />38 to 60 inches=sandy clay loam <br />soil Properties anQ Qualities <br />Louviers <br />Parent material: Colluvium, <br />residuum <br />Depth class: Shallow <br />Drainage class: well drained <br />Permeability: Slow <br />Available water capacity: Low <br />Potential rooting depth: l0 to <br />20 inches <br />Runoff: Rapid <br />Hazard of water erosion: Very <br />high <br />Hazard of wind erosion: Slight <br />Sarcillo <br />Parent material: Colluvium, <br />residuum <br />Depth class: Shallow <br />Drainage class: Well drained <br />Permeability: Slow <br />Available water capacity: Very <br />low <br />Potential rooting depth: 10 to <br />20 inches <br />Runoff: Rapid <br />Hazard of water erosion: Very <br />high <br />Hazard of wind erosion: Slight <br />Trag <br />Parent material: Alluvium <br />Depth class: Very deep <br />Drainage class: Well drained <br />Permeability: Moderate <br />Available water capacity: High <br />Potential rooting depth: 60 or <br />more inches <br />Runoff: Medium <br />Hazard of water erosion: High <br />Hazard of wind erosion: Slight <br />Contrasting Inclusions <br />Soils that are shallow and <br />average less than 35 percent <br />clay in the profile <br />5-1-14 <br />