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Custom Soil Resource Report <br /> Rifle Area, Colorado, Parts of Garfield and Mesa Counties <br /> 3—Arvada loam, 1 to 6 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: jnxv <br /> Elevation: 5,100 to 6,200 feet <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Arvada and similar soils:80 percent <br /> Minor components:5 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: 1 to 6 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 <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 content: 10 percent <br /> Gypsum, maximum content:2 percent <br /> Maximum salinity:Slightly saline to strongly saline(4.0 to 16.0 mmhos/cm) <br /> Sodium adsorption ratio, maximum:30.0 <br /> Available water capacity: Moderate(about 8.0 inches) <br /> Interpretive groups <br /> Land capability classification(irrigated): 7s <br /> Land capability classification(noninigated): 7s <br /> Hydrologic Soil Group: C <br /> Ecological site: R048AY261 CO-Salt Flats <br /> Hydric soil rating: No <br /> Minor Components <br /> Wann <br /> Percent of map unit:5 percent <br /> Landform:Terraces <br /> 14 <br />