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Custom Soil Resource Report <br /> Golden Area, Colorado, Parts of Denver, Douglas, Jefferson, and Park <br /> Counties <br /> 3—Allens Park variant-Ratake-Rock outcrop complex, 30 to 50 percent <br /> slopes <br /> Map Unit Setting <br /> National map unit symbol: jpnh <br /> Elevation: 6,500 to 7,800 feet <br /> Mean annual precipitation: 17 to 20 inches <br /> Frost-free period: 76 to 125 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Allens park variant and similar soils: 35 percent <br /> Ratake and similar soils: 30 percent <br /> Rock outcrop: 20 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Aliens Park Variant <br /> Setting <br /> Landform: Mountain slopes <br /> Landform position (two-dimensional): Backslope <br /> Landform position (three-dimensional): Mountainflank <br /> Down-slope shape: Linear, convex <br /> Across-slope shape: Linear, convex <br /> Parent material: Stony, gravelly, and loamy residuum weathered from igneous and <br /> metamorphic rock <br /> Typical profile <br /> H1 -0 to 2 inches: gravelly sandy loam <br /> H2-2 to 7 inches: gravelly loamy sand <br /> H3- 7 to 32 inches: sandy clay loam, gravelly sandy clay loam <br /> H3- 7 to 32 inches: weathered bedrock <br /> H4-32 to 36 inches: <br /> Properties and qualities <br /> Slope: 30 to 50 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Drainage class:Well drained <br /> Runoff class: High <br /> Capacity of the most limiting layer to transmit water(Ksat): Moderately low to high <br /> (0.06 to 2.00 in/hr) <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Available water capacity: Moderate (about 6.9 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): None specified <br /> Land capability classification (nonirrigated): 7e <br /> Hydrologic Soil Group: C <br /> Ecological site: F048AY91000 <br /> 14 <br />