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Map Unit Description—Weld County,Colorado,Northern Part Koskie Pit 2020 Amendment <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Calcium carbonate, maximum in profile: 5 percent <br /> Salinity, maximum in profile: Nonsaline (0.1 to 1.0 mmhos/cm) <br /> Available water storage in profile: High (about 9.5 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 4e <br /> Land capability classification (nonirrigated): 4e <br /> Hydrologic Soil Group: C <br /> Ecological site. Loamy Plains(R067BY002CO) <br /> Hydric soil rating. No <br /> Minor Components <br /> Manzanst <br /> Percent of map unit: 8 percent <br /> Landform: Alluvial fans, terraces <br /> Landform position (three-dimensional): Tread <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Ecological site: Clayey Plains (R067BY042CO) <br /> Hydric soil rating. No <br /> Avar <br /> Percent of map unit: 7 percent <br /> Landform: Swales on terraces, swales on terraces <br /> Landform position (three-dimensional): Tread <br /> Down-slope shape: Linear, concave <br /> Across-slope shape: Linear, concave <br /> Ecological site: Salt Flat(R067BY033CO) <br /> Hydric soil rating: No <br /> 54—Platner loam, 0 to 3 percent slopes <br /> Map Unit Setting <br /> National map unit symbol. 2tln0 <br /> Elevation: 4,000 to 4,930 feet <br /> Mean annual precipitation. 14 to 17 inches <br /> Mean annual air temperature: 46 to 50 degrees F <br /> Frost-free period: 135 to 160 days <br /> Farmland classification: Prime farmland if irrigated <br /> Map Unit Composition <br /> Platner and similar soils: 85 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> USDA Natural Resources Web Soil Survey 3/24/2020 <br /> Conservation Service National Cooperative Soil Survey Page 6 of 8 <br />