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• <br /> Map Unit Desalpfbn:Seitz-Ilia association,8 to SO percent slopes-Rio <br /> Grande NF Area,Colorado.West Pert.Parts of Ardgdets.Cons os.Hinsdale, <br /> Mineral,Rio Grande.Sapuache,and San Juan Counties <br /> Rio Grande NF Area, Colorado, West Part, Parts of <br /> Archuleta, Conejos, Hinsdale, Mineral, Rio Grande, <br /> Saguache, and San Juan Counties <br /> 168-Seitz-Wtnz association, 8 to 60 percent slopes <br /> Map Unit Setting <br /> Elevation:9,500 to 11,600 feet <br /> Mean annual precipitation:18 to 30 inches <br /> Mean annual air temperature:36 to 38 degrees F <br /> Frost-free period:30 to 60 days <br /> Map Unit Composition <br /> Seitz and similar soils:45 percent <br /> Vlrinz and similar soils:40 percent <br /> Minor components:15 percent <br /> Description of Seitz <br /> Setting <br /> Landform:Mountains <br /> Landform posr7iari(three-dimensional).Mountainflank <br /> Down-slope shape:linear <br /> Across-slope shape:Linear <br /> Parent material:Residuum weathered <br /> from mixed and/or <br /> colluvium <br /> derived from mixed <br /> Properties and qualities <br /> Slope:15 to 60 <br /> percent <br /> Surface area covered with cobbles,stones or boulders:0.1 percent <br /> Depth to resfrictive feature:Mote than 80 inches <br /> Drainage class:Well drained <br /> Capacity of the most ung layer to transmit water <br /> (Ksat):Moderately low to moderately high(0.06 to 0.20 in/hr) <br /> Depth to water table.More than 80 inches <br /> Frequency of flooding:None <br /> Frequency of ponding:None <br /> Maximum s Nonsaline(0.0 to 1.0 mrnhos/cm) <br /> Available water capacity:Moderate(about 7.3 inches) <br /> Interpretive groups <br /> Land capability(nonirligated):7e <br /> Other vegetative classfflcation:Subalpine fir-Engelmann spruce/ <br /> common juniper(ABLA-PIEN/JUCO8)(C0309 <br />