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901-Haplic Torriarents (gravel <br />Pits) <br />Map Uhit Setting <br />Major Land Rasource Area: 34 <br />Elevation: 4,700 to 7,000 feet (1,433 to 2;134 <br />meters) <br />Mean annual precipitation: 8 to 12 inches (203 <br />to 305 millimeters) <br />Mean annual air temperature: 47 to 51 degrees <br />F. (8.3 to 10.5 degrees C.) <br />Frost-free period: 125 to 160 days <br />Map Unit Composition <br />Haplic Torriarents and similar soils: 85 percent <br />Minor components: <br />Component Descriptions <br />Haplic Torriarents soils <br />Landscape: River valley, foothills, outwash plain <br />Landform: floodplain, outwash fan, outwash <br />plain <br />Parent material: Gravelly alluvium derived from <br />mixed sources, gravelly outwash derived <br />from mixed sources <br />Slope: 0 to 180 percent <br />Surface fragments: About 50 percent rounded <br />Depth to restrictive feature: Greater than 60 <br />inches <br />Drainage class: Excessively drained <br />Slowest permeabflity.~ 2.0 to 6.0 in/hr <br />(moderately rapid) <br />Available wafer capacity: About 1.8 inches (very <br />low) <br />Shrink-swell potential: About 0.0 percent (low) <br />Flooding hazard: None to rare <br />Ponding hazard: None to frequent <br />Seasons! high water table depth: 0 to greater <br />than 60 inches <br />Runoff class: Low <br />Calcium carbonate maximum: About 5 percent <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhoslcm <br />(nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Ecological site: Unspecified <br />Potential native vegetation: Unspecified <br />Land capability subclass (irrigated): 7s <br />Land capability subclass (nonirrfgated): 7c <br />=.~~`~NC1; CuPY SC~JECi TO CH63I0$~~ <br />Typical Profile: <br />C-0 to 83 inches; very gravelly fine sand <br />