2021-05-24_PERMIT FILE - M2021035

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Yuma County, Colorado 43—Valent sand, 3 to 9 percent slopes Map Unit Setting • National map unit symbol: 2tczf • Elevation: 3,050 to 5,150 feet • Mean annual precipitation: 12 to 18 inches • Mean annual air temperature: 48 to 55 degrees F • Frost-free period: 130 to 180 days • Farmland classification: Not prime farmland Map Unit Composition • Valent and similar soils: 80 percent • Minor components: 20 percent • Estimates are based on observations, descriptions, and transects of the mapunit. Description of Valent Setting • Landform: Dunes, hills • Landform position (two-dimensional): Shoulder, backslope, summit, footslope • Landform position (three-dim ensiona/): Side slope, crest, nose slope, head slope • Down-slope shape: Linear, convex • Across-slope shape: Linear, convex • Parent material: Noncalcareous eolian sands Typical profile • A - 0 to 5 inches: sand • AC - 5 to 12 inches: sand • C1 - 12 to 30 inches: sand • C2 - 30 to 80 inches: sand Properties and qualities • Slope: 3 to 9 percent • Depth to restrictive feature: More than 80 inches • Drainage class: Excessively drained • Runoff class: Very low • Capacity of the most limiting layer to transmit water (Ksat): High to very high (6.00 to 39.96 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: None • Frequency of ponding: None • Calcium carbonate, maximum content: 1 percent • Maximum salinity: Nonsaline (0.0 to 1.9 mmhos/cm) • Available water capacity: Very low (about 2.4 inches) Interpretive groups • Land capability classification (irrigated): 4e • Land capability classification (nonirrigated): 6e • Hydrologic Soil Group: A