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Custom Soil Resource Report <br /> Landform position (three-dimensional): Tread <br /> 4—Arvada loam, 6 to 20 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: jny6 <br /> Elevation: 5,100 to 6,200 feet <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Arvada and similar soils: 85 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Arvada <br /> Setting <br /> Landform: Terraces, fans <br /> Landform position (three-dimensional): Tread <br /> Down-slope shape: Convex, linear <br /> Across-slope shape: Convex, linear <br /> Parent material: Highly saline alluvium derived from sandstone and shale <br /> Typical profile <br /> H1 -0 to 3 inches: loam <br /> H2-3 to 17 inches: silty clay loam <br /> H3- 17 to 60 inches: silty clay loam <br /> Properties and qualities <br /> Slope: 6 to 20 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Natural drainage class: Well drained <br /> Runoff class: Very high <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 in profile: 10 percent <br /> Gypsum, maximum in profile: 2 percent <br /> Salinity, maximum in profile: Slightly saline to strongly saline (4.0 to 16.0 mmhos/ <br /> cm) <br /> Sodium adsorption ratio, maximum in profile: 30.0 <br /> Available waterstorage in profile: Moderate (about 8.0 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 7s <br /> Land capability classification (nonirrigated): 7s <br /> Hydrologic Soil Group: C <br /> 13 <br />