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Custom Soil Resource Report <br /> Weld County, Colorado, Northern Part <br /> 1-Altvan fine sandy loam, 0 to 6 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: 35yq <br /> Elevation: 3,500 to 5,500 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 /> Farmland classification: Farmland of statewide importance <br /> Map Unit Composition <br /> Altvan 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 Altvan <br /> Setting <br /> Landform: Plains <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material. Calcareous gravelly alluvium <br /> Typical profile <br /> H1 -0 to 6 inches. fine sandy loam <br /> H2- 6 to 22 inches. sandy clay loam <br /> H3-22 to 27 inches: sandy clay loam <br /> H4-27 to 60 inches. gravelly coarse sand <br /> Properties and qualities <br /> Slope:0 to 6 percent <br /> Depth to restrictive feature:20 to 40 inches to strongly contrasting textural <br /> stratification <br /> Drainage class:Well drained <br /> Runoff class: Low <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. 15 percent <br /> Available water capacity: Low(about 4.6 inches) <br /> Interpretive groups <br /> Land capability classification(irrigated): 3e <br /> Land capability classification(nonirrigated): 4e <br /> Hydrologic Soil Group: B <br /> Ecological site: R067BY002CO-Loamy Plains <br /> Hydric soil rating: No <br /> Minor Components <br /> Peetz <br /> Percent of map unit.5 percent <br /> 14 <br />