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• Physical and, where possible, chemical properties of each horizon within the sampled profile were <br /> described and recorded in the field on standard SCS "232" soil description forms. These properties <br /> included: <br /> • depth and thickness of horizons <br /> • relative position of soil horizons <br /> • type and nature of horizon boundaries <br /> • color (dry and moist) of horizons <br /> • texture (fine earth fraction) <br /> • coarsefragment content (type-gravel, cobble, sandstone channer, etc.; size (2mm-3", 3"-10", <br /> greater than 10"); and percent (%) by volume, if significant) <br /> • soil structure (type, size, and grade) <br /> • soil consistence (dry, moist, and wet) <br /> • roots (number, size, and depths) <br /> • clay films, if present (number, thickness, occurrence) <br /> • effervescence with 0.1 N HCI (none, slight, moderate, strong, violent) <br /> • mottles, if present (number, size, distinctness, color) <br />• • soil moisture characteristics at the time of sampling <br />In addition, at each soil sampling site, the following parameters were also described: <br />• vegetation <br />• parent material <br />• physiography (geomorphic position) <br />• relief, if significant <br />• elevation (obtainable from topographic maps) <br />• slope <br />• aspect <br />• erosion condition <br />• permeability <br />• internal drainage class <br />• depth to ground water, if encountered <br />• salts or alkali <br />(REVISED 2/00) 2.04.9-~ <br />