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Map Unit Description: Rizozo-Neville complex, 3 to 30 percent slopes --El Paso County Area, <br />Colorado <br />El Paso County Area, Colorado <br />76—Rizozo-Neville complex, 3 to 30 percent slopes <br />Map Unit Setting <br />National map unit symbol: 369q <br />Elevation: 6,000 to 6,500 feet <br />Mean annual precipitation: 13 to 15 inches <br />Mean annual air temperature: 46 to 50 degrees F <br />Frost -free period: 130 to 150 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Rizozo and similar soils: 35 percent <br />Neville and similar soils: 25 percent <br />Estimates are based on observations, descriptions, and transects of the <br />mapunit. <br />Description of Rizozo <br />Setting <br />Landform: Terraces, fans, hills <br />Landform position (three-dimensional): Side slope <br />Down-slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Medium -textured residuum weathered from <br />sandstone <br />Typical profile <br />A - 0 to 3 inches: loam <br />C - 3 to 10 inches: loam <br />R - 10 to 20 inches: unweathered bedrock <br />Properties and qualities <br />Slope: 3 to 30 percent <br />Depth to restrictive feature: 10 to 20 inches to lithic bedrock <br />Natural drainage class: Well drained <br />Runoff class: Medium <br />Capacity of the most limiting layer to transmit water (Ksat): <br />Moderately low to moderately high (0.06 to 0.20 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 in profile: 10 percent <br />Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to <br />2.0 mmhos/cm) <br />Available water storage in profile: Very low (about 1.5 inches) <br />Interpretive groups <br />Land capability classification (irrigated): None specified <br />Land capability classification (nonirrigated): 7e <br />Hydrologic Soil Group: D <br />USDA Natural Resources Web Soil Survey 10/21/2015 <br />Conservation Service National Cooperative Soil Survey Page 1 of 2 <br />