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Custom Soil Resource Report <br />Weld County, Colorado, Southern Part <br />1— Altvan loam, 0 to 1 percent slopes <br />Map Unit Setting <br />Elevation: 4,500 to 4,900 feet <br />Mean annual precipitation: 14 to 16 inches <br />Mean annual air temperature: 46 to 48 degrees F <br />Frost -free period. 130 to 150 days <br />Map Unit Composition <br />Altvan and similar soils: 90 percent <br />Minor components: 10 percent <br />Description of Altvan <br />Setting <br />Landform: Terraces <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Old alluvium <br />Properties and qualities <br />Slope: 0 to 1 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high <br />(0.20 to 2.00 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. 5 percent <br />Available water capacity: Low (about 5.7 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 3s <br />Land capability (nonirrigated): 4e <br />Ecological site: Loamy Plains (R067BY002CO) <br />Typical profile <br />0 to 10 inches: Loam <br />10 to 25 inches: Clay loam <br />25 to 60 inches: Gravelly sand <br />Minor Components <br />Cascajo <br />Percent of map unit. 9 percent <br />Aquic haplustolls <br />Percent of map unit. 1 percent <br />Landform: Swales <br />13 <br />