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C <br />Custom Soil Resource Report <br />Rio Blanco County Area, Colorado Version date:2 /4/2008 <br />10:06:40 AM <br />11— Borollic Calciorthids -Guben complex, 6 to 50 percent <br />slopes <br />Map Unit Setting <br />Elevation: 5,800 to 6,900 feet <br />Mean annual precipitation: 15 to 18 inches <br />Mean annual air temperature: 41 to 44 degrees F <br />Frost -free period: 80 to 105 days <br />Map Unit Composition <br />Borollic calciorthids and similar soils: 60 percent <br />Guben and similar soils: 30 percent <br />Description of Borollic Calciorthids <br />Setting <br />Landform: Terraces <br />Landform position (three- dimensional): Tread <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Very calcareous, mixed source alluvium and /or glacial <br />outwash <br />Properties and qualities <br />Slope: 25 to 50 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 <br />high (0.20 to 0.60 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: 60 percent <br />Maximum salinity. Very slightly saline to slightly saline (4.0 to 8.0 <br />mmhos /cm) <br />Available water capacity. Very high (about 24.9 inches) <br />Interpretive groups <br />Land capability (nonirrigated): 7e <br />Ecological site: Stony Foothills (R048AY287CO) <br />Typical profile <br />0 to 4 inches: Channery loam <br />4 to 11 inches: Clay loam, silty clay loam <br />19 to 60 inches: Silt loam, loam, silty clay loam <br />Description of Guben <br />Setting <br />Landform: Terraces <br />Landform position (three- dimensional): Tread <br />Down -s lope shape: Linear <br />11 <br />• <br />