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Other vegetative classification: Subalpine fir - Engelmann spruce/myrtle <br />whortleberry (ABLA-PIEN/VAMY2) (C0320), Subalpine fir - Engelmann spruce/ <br />grouse whortleberry (ABLA-PIEN/VASC) (C0321), Subalpine fir - Engelmann <br />spruce/moss (ABLA-PIEN/MOSS) (C0311) <br />Hydric soil rating: No <br />Minor Components <br />Frisco family <br />Percent of map unit:10 percent <br />Hydric soil rating: No <br />Rock outcrop <br />Percent of map unit:5 percent <br />Hydric soil rating: Unranked <br />7700C—Leighcan family, 40 to 75 percent slopes <br />Map Unit Setting <br />National map unit symbol: tlyn <br />Elevation: 9,500 to 11,500 feet <br />Mean annual precipitation: 20 to 40 inches <br />Mean annual air temperature: 36 to 39 degrees F <br />Frost-free period: 30 to 50 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Leighcan family and similar soils:85 percent <br />Minor components:15 percent <br />Estimates are based on observations, descriptions, and transects of the mapunit. <br />Description of Leighcan Family <br />Setting <br />Landform:Mountain slopes <br />Down-slope shape:Linear <br />Across-slope shape:Linear <br />Parent material:Residuum and/or slope alluvium derived from igneous and <br />metamorphic rock <br />Typical profile <br />A - 0 to 2 inches: cobbly silt loam <br />AE - 2 to 9 inches: very cobbly silt loam <br />Bw - 9 to 28 inches: very cobbly sandy loam <br />BCd - 28 to 45 inches: extremely stony loamy sand <br />Cd - 45 to 60 inches: extremely stony loamy sand <br />Properties and qualities <br />Slope:40 to 75 percent <br />Surface area covered with cobbles, stones or boulders:16.0 percent <br />Depth to restrictive feature:20 to 60 inches to densic material <br />Custom Soil Resource Report <br />28