2006-12-28_PERMIT FILE - M2006085

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MIK-Midway-Chicosa complex, 5 to 35 percent slopes Map Unit Setting Major Land Resource Area: 49, 67 Elevation: 4,800 to 6,500 feel (1,463 to 1,981 meters) Mean annual preciprtation: 14 to 16 inches (356 to 406 millimeters) Mean annual air temperature: 48 to 54 degrees F. (9.0 to 12.0 degrees C.) Frost-free period: 120 to 145 days Note: Located at the base of the foothills near Trinidad. Map Unit Composition Midway and similar soils: 45 percent Chicosa and similar soils: 40 percent Minor components: 15 percent Component Descriptions Midway soils Landscape: Foothills Landform: Fan remnants, pediments Position on landform: Backslopes Parent material: Slope alluvium and residuum weathered from shale Slope: 15 to 35 percent, west to southeast aspects Surface fragments: About 10 percent subangular gravel Depth to restrictive feature: 10 to 20 inches to bedrock (paralithic) Drainage class: Well drained Slowest permeability:.06 to 0.2 in/hr (slow) Available water capacity: About 3.0 inches (low) Shrink-swell potential: About 7.5 percent (high) Flooding hazard: None Ponding hazard: None Seasonal high water fable depth: Unspecified Runoff class: Very high Calcium carbonate maximum; About 15 percent Gypsum maximum: About 15 percent Salinity maximum: About 8 mmhos/cm (slightly saline) Sodium adsorption ratio maximum: About 15 (moderately sodic) Relative effective annual precipitation: Unspecified Ecological site: Shaly Foothill Potential native vegetation: alkali sacaton, western wheatgrass, blue grams, sideoats grams, fourwing saltbush, green needlegrass, winterfat, little bluestem, american vetch Land capability subclass (irrigatedJ: 7e Land capability subclass (nonirrigated): 7e Typical Profile: A--O to 4 inches; clay loam AC-4 to 10 inches; silty clay C-10 to 18 inches; silty clay Cr-18 to 39 inches; weathered bedrock Chicosa soils Landscape: Foothills Landform: Fan remnants Position on landform: Summits, shoulders Parent material: Sandy and gravelly alluvium Slope: 5 to 25 percent, west to east aspects Surface fragments: About 5 percent rounded cobbles, about 15 percent rounded gravel Depth to restrictive feature: 14 to 30 inches to strongly contrasting textural stratification Drainage class: Somewhat excessively drained Slowest permeability: 0.6 to 2.0 in/hr (moderate) Available water capacity: About 1,8 inches (very low) Shrink-swell potential: About 1.5 percent (low) Flooding hazard: None Ponding hazard: None Seasonal high water table depth: Unspecified Runoff class: Medium Calcium carbonate maximum: About 40 percent Gypsum maximum: None Salinity maximum: About 4 mmhos/cm (very slightly saline) Sodium adsorption ratio maximum: About 5 (slightly sodic) Relative effective annual precipitation: Unspecified Ecological site: Gravelly Foothill Potential native vegetation: little bluestem, blue grams, needleandthread, sideoats grams, western wheatgrass, mountain muhly, true mountain mahogany, fringed sagewort, rocky mountain juniper, small soapweed Land capability subclass (irrigated): 6e Land capability subclass (nonirrigated): 6e Typical Profile: A--O to 6 inches; gravelly loam Bw-6 to 20 inches; very gravelly loam 26k-20 to 37 inches; extremely gravelly sandy loam 2C-37 to 72 inches; extremely gravelly loamy sand Minor Components Capulin and similar soils Composition.• About 10 percent Landscape: Foothills Landform: Fans Position on landform: Footslopes, backslopes Slope: 5 to 10 percent Depth to restrictive feature: Unspecified