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Table I-2 <br /> • Map Unit Description—San Miguel Area,Colorado,Parts of Dolores,Montrose, <br /> and San Miguel Counties <br /> O <br /> Map Unit Composition <br /> Bodot, dry, and similar soils:45 percent <br /> Ustic torriorthents and similar soils:40 percent <br /> Minor components: 15 percent <br /> Description of Bodot, Dry <br /> Setting • <br /> Landform:Terraces, structural benches,landslides <br /> Landform position(three-dimensional):Tread, riser <br /> Down-slope shape:Linear <br /> Across-slope shape:Linear <br /> Parent material:Residuum weathered from shale <br /> Properties and qualities <br /> Slope:.5 to 50 percent <br /> Surface area covered with cobbles, stones or boulders:5.0 percent <br /> Depth to restrictive feature:20 to 40 inches to paralithic bedrock <br /> Drainage class:Well drained <br /> Capacity of the most limiting layer to transmit water(Ksat):Very low <br /> to moderately high(0.00 to 0.20 in/hr) <br /> Depth to water table:More than 80 inches <br /> Frequency of flooding:None <br /> • <br /> lb Frequency of ponding:None <br /> Calcium carbonate, maximum content: 10 percent <br /> Maximum salinity:Nonsaline to slightly saline(2.0 to 8.0 mmhos/cm) <br /> Sodium adsorption ratio, maximum: 10.0 <br /> "Available water capacity:Low(about 4.0 inches) <br /> Interpretive groups <br /> Land capability(nonirrigated):7e <br /> Ecological site:Basin Shale(R035XY408C0) <br /> Typical profile <br /> • <br /> 0 to 3 inches:Cobbly clay loam • <br /> • <br /> 3 to 30 inches:Cobbly silty clay <br /> 30 to 34 inches:Weathered bedrock <br /> Description of Ustic Torriorthents <br /> Setting <br /> Landform:Structural benches, landslides,terraces <br /> Landform position(three-dimensional):Riser,tread <br /> Down-slope shape:Linear <br /> Across-slope shape:Linear <br /> Parent material:Residuum weathered from sandstone and shale <br /> Properties and qualities <br /> Slope:5 to 50 percent . <br /> Depth to restrictive feature: 10 to 80 inches to lithic bedrock <br /> Drainage class:Well drained <br /> Capacity of the most limiting layer to transmit water <br /> (Ksat):Moderately low to moderately high(0.06 to 0.20 in/hr) <br /> diDepth to water table:More than 80 inches <br /> USDA Natural Resources Web Soil Survey 5/4/2011 <br /> WM Conservation Service National Cooperative Soil Survey Page 3 of 9 <br />