2015-07-08_PERMIT FILE - M2015024

Home Browse Search

Custom Soil Resource Report Ridgway Area, Colorado, Parts of Delta, Gunnison, Montrose, and Ouray Counties 160—Arabrab fine sandy loam, 3 to 15 percent slopes Map Unit Setting National map unit symbol. k28k Elevation: 7,300 to 7,700 feet Mean annual precipitation: 12 to 16 inches Mean annual air temperature: 45 to 47 degrees F Frost -free period: 110 to 130 days Farmland classification: Not prime farmland Map Unit Composition Arabrab and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Arabrab Setting Landform: Mesas, dipslopes on cuestas Parent material: Loamy slope alluvium derived from sandstone over loamy residuum weathered from sandstone Typical profile Oi - 0 to 2 inches: slightly decomposed plant material A - 2 to 7 inches: fine sandy loam Bt - 7 to 12 inches: sandy clay loam R - 12 to 16 inches: unweathered bedrock Properties and qualities Slope: 3 to 15 percent Depth to restrictive feature: 7 to 19 inches to lithic bedrock Natural drainage class: Well drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline (0.0 to 1.0 mmhos/cm) Available water storage in profile: Very low (about 2.0 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Other vegetative classification: Loamy foothills (null -27) Minor Components Evpark Percent of map unit. 5 percent 12