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• PjF =Louviers-Rombo-Travessilla <br />complex, 30 to 65 percent slopes 0 to 5 inches=sandy loam <br />Substratum: <br /> Setting 5 to 14 inches=sandy loam <br /> Landform: Foothills Bedrock: <br /> Position on landscape: 14 inches=Hard sandstone <br /> Backslopes, ridgetops <br /> Elevation: 6,500 to 7,800 feet <br /> Native plants: Pinyon, juniper, 8oi1 Properties and Qualities <br /> grass Louviers <br /> Air temperature: 45 to 47 Parent material: Colluvium, <br /> degrees F on north-facing Rombo residuum <br /> soils and 47 to 50 on all other Position on landscape: Very <br /> slopes steep backslopes <br /> Annual precipitation: 15 to 18 Depth class: Shallow <br /> inches Drainage class: Well drained <br /> Frost-free period: 80 to 130 Permeability: Slow <br /> days Available water capacity: Very <br /> low <br /> Potential rooting depth: 10 to <br /> Composition 20 inches <br /> Louviers soil and similar Runoff: Very rapid <br /> inclusions: 40 percent Hazard of water erosion: Very <br /> Rombo soil and similar high <br /> inclusions: 30 percent Hazard of wind erosion: Slight <br /> Travessilla soil and similar <br /> inclusions: 15 percent Rombo <br /> Rock outcrop: 5 percent Parent material: Colluvium, <br />• Contrasting inclusions: 10 residuum <br /> percent Position on landscape: North <br /> facing backslopes <br /> Depth class: Moderately deep <br /> Typical Profile Drainage class: Well drained <br /> Louviers Permeability: Slow <br /> Surface layer: Available water capacity: Low to <br /> 0 to 4 inches=very channery clay moderate <br /> loam Potential rooting depth: 20 to <br /> Substratum: 40 inches <br /> 4 to 13 inches=clay loam Runoff: Very rapid <br /> 13 to 16 inches=clay Hazard of water erosion: Very <br /> Bedrock: high <br /> 16 inches=soft shale, siltstone Hazard of wind erosion: Slight <br /> Rombo Travessilla <br /> Surface layer: Parent material: Residuum <br /> 0 to 6 inches=channery silty Position on landscape: Ridgetops <br /> clay loam Depth class: Shallow <br /> Subsoil: Drainage class: Well drained <br /> 6 to 38 inches=channery silty Permeability: Moderately rapid <br /> clay loam Available water capacity: Very <br /> Bedrock: low <br /> 38 inches=shale, siltstone, coal Potential rooting depth: 10 to <br /> 20 inches <br />. Travessilla <br />Surface layer: Runoff: Very rapid <br /> <br />5-1-1 <br />