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Map Unit Description:Argiustolls-Rock outcrop complex, 15 to 60 percent slopes--Golden Golden Mine <br /> Area,Colorado,Parts of Denver,Douglas,Jefferson,and Park Counties <br /> Golden Area, Colorado, Parts of Denver, Douglas, <br /> Jefferson, and Park Counties <br /> 5—Argiustolls-Rock outcrop complex, 15 to 60 percent <br /> slopes <br /> Map Unit Setting <br /> National map unit symbol: jpp6 <br /> Elevation: 5,600 to 6,500 feet <br /> Mean annual precipitation: 15 to 17 inches <br /> Frost-free period: 126 to 142 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Argiustolls and similar soils: 65 percent <br /> Rock outcrop:20 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> Description of Argiustolls <br /> Setting <br /> Landform: Hillslopes <br /> Landform position (two-dimensional):Shoulder, backslope <br /> Landform position (three-dimensional): Side slope <br /> Down-slope shape: Convex <br /> Across-slope shape:Convex <br /> Parent material: Gravelly, stony, loamy colluvium and/or residuum <br /> weathered from sedimentary rock <br /> Typical profile <br /> H1 -0 to 10 inches: stony sandy loam <br /> H2- 10 to 35 inches: very gravelly sandy loam, very gravelly sandy <br /> clay loam <br /> H2- 10 to 35 inches: unweathered bedrock <br /> H3-35 to 39 inches: <br /> Properties and qualities <br /> Slope: 15 to 60 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 <br /> (Ksat): Moderately low to 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 /> Available water capacity:Low(about 5.4 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): None specified <br /> USDA Natural Resources Web Soil Survey 2/17/2021 <br /> Conservation Service National Cooperative Soil Survey Page 1 of 2 <br />