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Truckton <br /> Percent of map unit: 5 percent <br /> Landform: I nterfluves <br /> Landform position(two-dimensional): Summit <br /> Landform position(three-dimensional): Intertluve <br /> Down-slope shape: Linear <br /> Across-slope shape: Convex <br /> Ecological site: Sandy Plains(R067BY024C0) <br /> Hydric soil rating: No <br /> EaA—Eastonville loamy sand, 0 to 3 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: 3651 <br /> Elevation: 4,500 to 5,970 feet <br /> Mean annual precipitation: 12 to 16 inches <br /> Mean annual air temperature: 46 to 52 degrees F <br /> Frost-free period: 135 to 180 days <br /> Farmland classification: Farmland of statewide importance <br /> Map Unit Composition <br /> Eastonville and similar soils: 90 percent <br /> Minor components: 10 percent <br /> Estimates are based on observations,descriptions, and transects of the mapunit. <br /> Description of Eastonville <br /> Setting <br /> Landform: Stream terraces <br /> Landform position(three-dimensional): Tread <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Alluvium <br /> Typical profile <br /> H1-0 to 17 inches: loamy sand <br /> H2- 17 to 45 inches: sandy loam <br /> H3-45 to 60 inches: sandy loam <br /> Properties and qualities <br /> Slope: 0 to 3 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Natural drainage class: Well drained <br /> Runoff class: Very low <br /> Capacity of the most limiting layer to transmit water(Ksat): High(1.98 to 6.00 <br /> in/hr) <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Available water storage in profile: Moderate(about 6.1 inches) <br /> 50 <br />