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Map Unit Description— Ridgway Area, Colorado, Parts of Delta, Gunnison, <br />Montrose, and Ouray Counties <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Calcium carbonate, maximum content: 10 percent <br />Gypsum, maximum content: 4 percent <br />Maximum salinity: Very slightly saline to moderately saline (4.0 to <br />16.0 mmhos /cm) <br />Sodium adsorption ratio, maximum: 4.0 <br />Available water capacity: Very low (about 1.3 inches) <br />Interpretive groups <br />Land capability (nonirrigated): 7c <br />Ecological site: Silty Saltdesert (R034XY41000) <br />Typical profile <br />0 to 2 inches: Silty clay loam <br />2 to 7 inches: Silty clay loam <br />7 to 15 inches: Weathered bedrock <br />15 to 48 inches: Weathered bedrock <br />48 to 96 inches: Weathered bedrock <br />Minor Components <br />Badland <br />Percent of map unit: 10 percent <br />Landform: Erosion remnants, hills <br />Sagers <br />Percent of map unit: 5 percent <br />Landform: Alluvial fans, fan remnants, stream terraces <br />Landform position (three- dimensional): Flat <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Ecological site: Salt Flats (R034XY262C0) <br />801 —Typic Torriorthents - Badland complex, 25 to 75 percent <br />slopes <br />Map Unit Setting <br />Elevation: 5,200 to 6,300 feet <br />Mean annual precipitation: 8 to 14 inches <br />Mean annual air temperature: 49 to 51 degrees F <br />Frost -free period: 140 to 160 days <br />Map Unit Composition <br />Typic torriorthents and similar soils: 70 percent <br />Badland: 25 percent <br />Minor components: 5 percent <br />Description of Typic Torriorthents <br />Setting <br />Landform: Erosion remnants, hills <br />Landform position (two - dimensional): Backslope, shoulder, summit <br />Landform position (three- dimensional): Side slope <br />USDA Natural Resources Web Soil Survey <br />Conservation Service National Cooperative Soil Survey <br />10/27/2012 <br />Page 45 of 63 <br />