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• USDA Hantlbook 60. Method (23c), page 105 <br />A.S.A. Monograph No. 9, 1982, Part 2, Method 29-3.5.2, page <br />570. <br />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 />• coarse fragment content (type -gravel, cobble, sandstone channer, etc.; size (2mm- <br /> 3", 3"-10", 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 />(Revised March 2006) 2.04.9-11 <br />