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Map Unit Description— Ridgway Area, Colorado, Parts of Delta, Gunnison, <br />Montrose, and Ouray Counties <br />Description of Samala <br />Setting <br />Landform: Dipslopes on cuestas, mesas <br />Parent material: Fine -loamy slope alluvium derived from sandstone <br />and shale <br />Properties and qualities <br />Slope: 3 to 15 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water <br />(Ksat): Moderately high to high (0.57 to 3.54 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: 40 percent <br />Gypsum, maximum content: 4 percent <br />Maximum salinity: Nonsaline to slightly saline (0.0 to 5.0 mmhos /cm) <br />Sodium adsorption ratio, maximum: 4.0 <br />Available water capacity: Low (about 4.3 inches) <br />Interpretive groups <br />Land capability (nonirrigated): 6e <br />Ecological site: SEMIDESERT LOAM (R034XY325C0) <br />Typical profile <br />0 to 5 inches: Very gravelly sandy loam <br />5 to 12 inches: Very cobbly sandy clay loam <br />12 to 21 inches: Very gravelly sandy loam <br />21 to 32 inches: Very gravelly sandy loam <br />32 to 60 inches: Very cobbly sandy loam <br />Minor Components <br />Blancot <br />Percent of map unit: 5 percent <br />Landform: Mesas, structural benches <br />Ecological site: SEMIDESERT LOAM (R034XY325C0) <br />130 — Shavano -Ustic Torrifluvents complex, 3 to 25 percent <br />slopes <br />Map Unit Setting <br />Elevation: 5,600 to 6,500 feet <br />Mean annual precipitation: 10 to 12 inches <br />Mean annual air temperature: 47 to 49 degrees F <br />Frost -free period: 125 to 145 days <br />Map Unit Composition <br />Shavano and similar soils: 60 percent <br />Ustic torrifluvents and similar soils: 30 percent <br />Minor components: 10 percent <br />USDA Natural Resources Web Soil Survey <br />Conservation Service National Cooperative Soil Survey <br />10/27/2012 <br />Page 5 of 63 <br />