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Custom Soil Resource Report <br />12 to 23 inches: Clay <br />23 to 60 inches: Clay <br />22-Bulkley silty clay, 3 to 12 percent slopes <br />Map Unit Setting <br />Elevation: 6,200 to 7,000 feet <br />Mean annual precipitation: 13 to 15 inches <br />Mean annual air temperature: 42 to 45 degrees F <br />Frost-free period: 75 to 95 days <br />Map Unit Composition <br />Bulkley and similar soils: 80 percent <br />Description of Bulkley <br />Setting <br />Landform: Hills, alluvial fans <br />Landform position (two-dimensional): Toeslope <br />Landform position (three-dimensional): Talf <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent material: 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): Very low to <br />moderately low (0.00 to 0.06 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 />Gypsum, maximum content: 1 percent <br />Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) <br />Available water capacity. High (about 9.0 inches) <br />Interpretive groups <br />Land capability (nonirrigated): 4e <br />Ecological site: Clayey Foothills (R034XY289CO) <br />Typical profile <br />0 to 4 inches: Silty clay <br />4 to 36 inches: Clay <br />36 to 60 inches: Silty clay <br />23-Bulkley silty clay, 12 to 25 percent slopes <br />Map Unit Setting <br />Elevation: 6,200 to 7,000 feet <br />Mean annual precipitation: 13 to 15 inches <br />Mean annual air temperature: 42 to 45 degrees F <br />Frost-free period: 75 to 95 days <br />15