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Our Job 81-20-00 Page A-2 <br />describes a given interval of dri11 hole (frequently an interval <br />of several feet), discrepancies do occur in the Unified Soil <br />Classification System nomenclature between that interval and a <br />particular sample in that interval. For example, an eight-foot- <br />thick interval in the Log of Dri1l Hole may be identified as a <br />silty sand (SM) while one sanple taken within the interval may <br />have individually been identified as a sandy silt (ML). This <br />discrepancy is frequently allowed to remain to enphasize the <br />occurrence of 1oca1 textural variations in the interval. <br />Plate A-2 is a "fold-out" legend to the Log of Dri11 <br />Ho1e. The descriptive terninology generally conforms to current <br />ASTM standards and is summarized as follows: <br />a. Soil Type - per Legend to Logs <br />b. Color - at field moisture <br />c. Moisture - (as estimated during drilling) <br />ttdryrt <br />"damp" - some noisture but less than optimumfor conpaction <br />ttmoisttt - near optimum <br />rrwetrr - above optinum <br />"saturated" - containing free moisture <br />d. Grain Size - ttfinet', "medium" and t'coarset' <br />e. Density (granular soils) - "Ioose" and "dense"