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Map Unit Description— Ridgway Area, Colorado, Parts of Delta, Gunnison, <br />Montrose, and Ouray Counties <br />USDA Natural Resources <br />Conservation Service <br />Sodium adsorption ratio, maximum: 8.0 <br />Available water capacity: High (about 10.2 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 3e <br />Land capability (nonirrigated): 7c <br />Ecological site: Salt Flats (R034XY262C0) <br />Typical profile <br />0 to 5 inches: Silty clay loam <br />5 to 12 inches: Silty clay loam <br />12 to 28 inches: Silty clay loam <br />28 to 38 inches: Silty clay loam <br />38 to 52 inches: Silty clay loam <br />52 to 65 inches: Silty clay loam <br />Minor Components <br />Aquisalids <br />Percent of map unit: 5 percent <br />Landform: Drainageways, marshes, sloughs <br />Down -slope shape: Linear <br />Across -slope shape: Concave, linear <br />Daiser <br />Percent of map unit: 5 percent <br />Landform: Alluvial fans, fan remnants, stream terraces <br />Landform position (three- dimensional): Tread, riser, flat <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Ecological site: Salt Flats (R034XY262C0) <br />Persayo <br />Percent of map unit: 5 percent <br />Landform: Erosion remnants <br />Landform position (two- dimensional): Shoulder, summit, backslope <br />Down -slope shape: Convex <br />Across -slope shape: Convex <br />Ecological site: Clayey Saltdesert (R034XY403C0) <br />Delta <br />Percent of map unit: 5 percent <br />Landform: Alluvial fans, fan remnants, stream terraces <br />Landform position (three- dimensional): Tread, riser, flat <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Ecological site: Salt Flats (R034XY262C0) <br />710 — Cherylade loam, 2 to 5 percent slopes <br />Map Unit Setting <br />Elevation: 6,200 to 6,600 feet <br />Mean annual precipitation: 8 to 10 inches <br />Mean annual air temperature: 49 to 51 degrees F <br />Frost -free period: 140 to 160 days <br />Web Soil Survey <br />National Cooperative Soil Survey <br />10/27/2012 <br />Page 15 of 63 <br />