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Custom Soil Resource Report <br />La Plata County Area, Colorado <br />5-Arboles clay, 3 to 12 percent slopes <br />Map Unit Setting <br />Elevation: 6,000 to 7,000 feet <br />Mean annual precipitation: 14 to 18 inches <br />Mean annual air temperature: 47 to 50 degrees F <br />Frost-free period. 110 to 130 days <br />Map Unit Composition <br />Arboles and similar soils: 80 percent <br />Minor components: 1 percent <br />Description of Arboles <br />Setting <br />Landform: Valleys <br />Landform position (three-dimensional): Base slope, side slope <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent material: Fine-textured alluvium derived from shale <br />Properties and qualities <br />Slope: 3 to 12 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately low to <br />moderately high (0.06 to 0.20 in/hr) <br />Depth to water table: More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Calcium carbonate, maximum content: 10 percent <br />Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) <br />Available water capacity: Very high (about 23.0 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 4e <br />Land capability (nonirrigated): 4e <br />Typical profile <br />0 to 6 inches: Clay <br />6 to 30 inches: Clay, silty clay <br />30 to 60 inches: Clay loam, silty clay loam, clay <br />Minor Components <br />Aquents <br />Percent of map unit: 1 percent <br />Landform: Depressions <br />12