2016-03-25_PERMIT FILE - M2015049

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Yuma County, Colorado 41—Stoneham loam Map Unit Setting • National map unit symbol: 35y9 • Elevation: 4,000 to 6,500 feet • Mean annual precipitation: 12 to 16 inches • Mean annual air temperature: 48 to 52 degrees F • Frost-free period: 130 to 170 days • Farmland classification: Prime farmland if irrigated Map Unit Composition • Stoneham and similar soils: 80 percent • Minor components: 20 percent • Estimates are based on observations, descriptions, and transects of the mapunit. Description of Stoneham Setting • Landform: Plains, terraces • Down-slope shape: Linear • Across-slope shape: Linear • Parent material: Wind-reworked, old alluvium Typical profile • Hi - 0 to 3 inches: loam • H2 - 3 to 7 inches: clay loam • H3 - 7 to 60 inches: sandy clay loam Properties and qualities • Slope: 0 to 3 percent • Depth to restrictive feature: More than 80 inches • Natural drainage class: Well drained • Runoff class: Low • Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: None • Frequency of ponding: None • Calcium carbonate, maximum in profile: 15 percent • Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) • Available water storage in profile: High (about 9.6 inches) Interpretive groups • Land capability classification (irrigated): 3e • Land capability classification (nonirrigated): 3e • Hydrologic Soil Group: B • Ecological site: Loamy Plains (R072XY001CO) Minor Components Ascalon • Percent of map unit: 10 percent Kim • Percent of map unit: 10 percent Exhibit J Vegetation Information (Rule 6.4.10) 20. This area is lightly covered with various plant species as listed in original exhibit 0 approx. 6-15 inches in height.