2012-09-06_REVISION - M2008070 (29)

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Map Unit Description: Blazon, moist - Rentsac complex, 8 to 65 percent slopes — Rio Blanco County Area, Colorado Rio Blanco County Area, Colorado 10— Blazon, moist - Rentsac complex, 8 to 65 percent slopes Map Unit Setting Elevation: 5,700 to 6,900 feet Mean annual precipitation: 15 to 17 inches Mean annual air temperature: 42 to 44 degrees F Frost -free period: 80 to 105 days Map Unit Composition Blazon, moist, and similar soils: 50 percent Rentsac and similar soils: 35 percent Description of Blazon, Moist Setting Landform: Ridges Landform position (three- dimensional): Upper third of mountainflank Down -slope shape: Linear, convex Across -slope shape: Linear, convex Parent material: Residuum weathered from shale Properties and qualities Slope: 8 to 40 percent Depth to restrictive feature: 10 to 20 inches to paralithic bedrock Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low (0.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Gypsum, maximum content: 2 percent Maximum salinity: Nonsaline to very slightly saline (2.0 to 4.0 mmhos/ cm) Sodium adsorption ratio, maximum: 5.0 Available water capacity: Low (about 3.9 inches) Interpretive groups Land capability (nonirrigated): 7e Typical profile 0 to 4 inches: Channery loam 4 to 16 inches: Channery clay loam, clay loam 16 to 20 inches: Weathered bedrock Description of Rentsac Setting Landform: Ridges Landform position (three- dimensional): Upper third of mountainflank Down -slope shape: Linear Across -slope shape: Linear USDA Natural Resources Web Soil Survey 12/15/2010 Conservation Service National Cooperative Soil Survey Page 1 of 2