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Custom Soil Resource Report <br /> Baca County, Colorado <br /> VoC—Vona sandy loam, warm, 3 to 6 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: 2t517 <br /> Elevation: 3,400 to 6,000 feet <br /> Mean annual precipitation: 14 to 16 inches <br /> Mean annual air temperature: 48 to 54 degrees F <br /> Frost-free period: 130 to 170 days <br /> Farmland classification: Prime farmland if irrigated and the product of I (soil <br /> erodibility)x C (climate factor)does not exceed 60 <br /> Map Unit Composition <br /> Vona, warm, and similar soils:85 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Vona, Warm <br /> Setting <br /> Landform: Sand sheets <br /> Landform position (two-dimensional): Backslope <br /> Landform position (three-dimensional): Head slope, side slope <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material. Eolian sands <br /> Typical profile <br /> A -0 to 5 inches: sandy loam <br /> Bt1 -5 to 12 inches: sandy loam <br /> Bt2- 12 to 17 inches: sandy loam <br /> Bk- 17 to 41 inches: sandy loam <br /> BCk-41 to 79 inches: loamy sand <br /> Properties and qualities <br /> Slope: 3 to 6 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Drainage class: Somewhat excessively drained <br /> Runoff class: Very low <br /> Capacity of the most limiting layer to transmit water(Ksat): High (2.00 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 /> Calcium carbonate, maximum content: 15 percent <br /> Gypsum, maximum content:2 percent <br /> Maximum salinity: Nonsaline to very slightly saline (0.0 to 3.9 mmhos/cm) <br /> Sodium adsorption ratio, maximum:2.0 <br /> Available water supply, 0 to 60 inches: Moderate (about 7.2 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 4e <br /> Land capability classification (nonirrigated): 4e <br /> Hydrologic Soil Group: A <br /> W.F. RATLIFF - East Sand Canyon Mine 9 June 1, 2023 <br />