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72 - Foidel loam, coal, 3 to 25% <br />Map Unit Setting <br />Major Land Resource Area: 48A <br />Elevation: 7,000 to 8,400 ft (2,134 to 2,560 m) <br />Mean annual precipitation: 18 to 20 inches (457 to <br />508 millimeters) <br />Average annual air temperature: 37 to 40 degrees F <br />(2.8 to 4.4 degrees C) <br />Frost -free period: 50 to 75 days <br />Map Unit Composition <br />Foidel and similar soils: 85 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Foidel soils <br />Landform: Mountainsides, plateaus <br />Parent material. Loess and residuum derived from <br />fine grained sandstone and shale <br />Slope: 3 to 25 percent <br />Drainage Class: Well drained <br />Slowest permeability: 0.2 to 0.6 in./hr. (moderately <br />slow) <br />Available water capacity. About 10.9" (high) <br />Shrink -swell potential: About 4.5 percent (moderate) <br />Hazard of flooding: None <br />Depth to seasonal high water table: Greater than 72 <br />inches <br />Runoff class: Medium <br />Calcium carbonate maximum: None <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhos/cm (nonsaline) <br />Sodium adsorption ratio: About O (nonsodic) <br />Ecological site: Brushy Loam <br />Potential native vegetation: Gambel's oak, <br />Saskatoon serviceberry, mountain brome, <br />Letterman's needlegrass, common chokecherry, elk <br />sedge, mountain snowbery, slender wheatgrass <br />Land capability subclass: (nonirrigated) 6e <br />Typical profile <br />0 to 2 inches - slightly decomposed plant mt <br />2 to 28 inches - loam <br />28 to 39 inches - clay loam <br />39 to 60 inches - clay loam <br />Minor Components <br />Winevada and similar soils <br />Composition: About 3 percent <br />Routt and similar soils <br />Composition: About 3 percent <br />Coarse textured soils and similar soils <br />Composition: About 3 percent <br />Cochetopa and similar soils <br />Composition: About 3 percent <br />Claybum and similar soils <br />Composition: About 3 percen <br />Foidel Series <br />Map Units: 72 and 73 <br />Local Phase(s): cool, moist <br />Depth class: very deep <br />Drainage Class: Well drained <br />Slowest permeability: 0.6 to 2.0 in./.hr. (moderate) <br />Landform: mountainsides, plateaus, mountain <br />plateaus <br />73 - Foidel loam, 25 to 65 percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 48A <br />Elevation: 7,000 to 8,400 feet (2,195 to 2,560 meters) <br />Mean annual precipitation: 18 to 20 inches (457 to 508 <br />millimeters) <br />Average annual air temperature: 37 to 40 degrees F (2.8 <br />to 4.4 degrees C) <br />Frost -free period. 50 to 75 days <br />Map Unit Composition <br />Foidel and similar soils: 85 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Foidel soils <br />Landform: Mountainsides <br />Parent material. Loess and residuum derived from fine- <br />grained sandstone and shale <br />Slope: 25 to 65 percent <br />Drainage Class: Well drained <br />Slowest permeability: 0.2 to 0.6 in./hr. (moderately slow) <br />Available water capacity. About 10.9 inches (high) <br />Shrink -swell potential. About 4.5 percent (moderate) <br />Hazard of flooding: None <br />Depth to seasonal high water table: Greater than 72 <br />inches <br />Runoff class: High <br />Calcium carbonate maximum: None <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhos/cm (nonsaline) <br />Sodium adsorption ratio: About O (nonsodic) <br />Ecological site: Brushy Loam <br />Potential native vegetation: Gambel's oak, Saskatoon <br />serviceberry, mountain brome, Letterman's needlegrass, <br />common chokecherry, elk sedge, mountain snowberry, <br />slender wheatgrass <br />Land capability subclass: (nonirrigated) 6e <br />Typical profile <br />0 to 2 inches - slightly decomposed plant <br />material <br />2 to 28 inches - loam <br />28 to 39 inches - clay loam <br />39 to 60 inches - clay loam <br />Minor Components <br />Skyway and similar soils <br />Composition: About 4 percent <br />Routt and similar soils <br />Composition: About 4 percent <br />Claybum and similar soils <br />Composition: About 4 percent <br />Lamphier and similar soils <br />Composition: About 3 percent <br />Parent material. alluvium and residuum derived from <br />sandstone, colluvium derived from sandstone, loess and <br />colluvium derived from fine-grained sandstone and shale, <br />loess and residuum derived from fine-grained sandstone <br />and shale, <br />Elevation: 7,000 to 9,000 feet (2,134 to 2,743 meters) <br />Slope: 3 to 65 percent <br />