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52 <br />vailable water capacity: About 10.6 inches (high <br />rink - swell potential: About 4.5 percent (moder e) <br />noff class: Very high <br />ium carbonate maximum: None <br />G 'sum maximum: None <br />Sa Iity maximum: About 0 mmhos /cm (nons• ne) <br />So• m adsorption ratio maximum: About 0 <br />• nsodic) <br />Ecolo, cal site: Brushy Loam <br />Potent I native vegetation: Gambel's oa askatoon <br />ser ceberry, mountain brome, Lett an's <br />nee • grass, elk sedge, mountain owberry, <br />nodd g brome, slender wheatgra <br />Land cap 'ility subclass (nonirrigated 7 <br />Typical Pro <br />0 to 17 i <br />17 to50i <br />50 to 60 in <br />es; loam <br />hes; clay loam <br />es; sandy clay I <br />Youga soils <br />Landform: Mountai ides <br />Position on landfor Backs pe, summit <br />Parent material: Resi urn nd colluvium derived <br />from sandstone <br />Slope: 15 to 45 percen <br />Drainage class: Well dra ed <br />Slowest permeability: 0. • 0.6 in. /hr. (moderately <br />slow) <br />Available water capaci <br />Shrink -swell potential <br />Runoff class: Very hi <br />Calcium carbonate aximum: one <br />Gypsum maximum: one <br />Salinity maximum: bout 0 mm s /cm (nonsaline) <br />Sodium adsorptio ratio maximu • About 0 <br />(nonsodic) <br />Ecological site :: ushy Loam <br />Potential native egetation: Gambel <br />serviceberr , elk sedge, mountain <br />Letterma needlegrass, common <br />mountai .nowberry, nodding brom <br />wheatgr s <br />Land capa • ity subclass (nonirrigated): 7 <br />i C.. - 1-1.\.z. 3 t-- L' <br />ut 10.8 inches (high) <br />5 percent (moderate) <br />ak, Saskatoon <br />rome, <br />hokecherry, <br />slender <br />Typical Pr de: <br />0 to inch; slightly decomposed plant m.. -rial <br />1 in' to 14 inches; loam <br />14 • 40 inches; clay loam <br />41 o 60 inches; sandy clay loam <br />Cochetopa and si -oils <br />Composition: ' • . 7 percent <br />Landform: ntain s <br />Position o andform: Fo . lope <br />or Components <br />Mod= -tely deep soils over sandstone <br />cre s and similar soils <br />Co •sition: About 7 perce <br />Depth ' restrictive featur- ' to 40 inches to <br />bedro lithic) <br />Foidel an imilar soils <br />Co • osition: About 6 percent <br />dform: Mountainsides <br />osition on lndform: Toeslope, footslop <br />Soil Survey <br />rock on <br />36— Clifsand - Chroder complex, 3 to 12 <br />percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 34 <br />Elevation: 5,400 to 6,000 feet (1,646 to 1,829 meters) <br />Mean annual precipitation: 7 to 10 inches (178 to 254 <br />millimeters) <br />Mean annual air temperature: 45 to 48 degrees F. <br />(7.2 to 8.9 degrees C.) <br />Freeze -free period: 90 to 105 days <br />Map Unit Composition <br />Clifsand and similar soils: 60 percent <br />Chroder and similar soils: 30 percent <br />Minor components: 10 percent <br />Component Descriptions <br />Clifsand soils <br />Landform: Fan terraces <br />Parent material: Alluvium derived from sedimentary <br />rocks <br />Slope: 3 to 12 percent <br />Drainage class: Well drained <br />Slowest permeability: 2.0 to 6.0 in. /hr. (moderately <br />rapid) <br />Available water capacity: About 3.9 inches (low) <br />Shrink - swell potential: About 1.5 percent (low) <br />Runoff class: Low <br />Calcium carbonate maximum: About 35 percent <br />Gypsum maximum: None <br />Salinity maximum: About 2 mmhos /cm (nonsaline) <br />