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• EXPLANATION OF SYMBOLS ON <br /> EXPLORFTORY BORING LOGS <br /> (CONTINUED) <br /> Ground—Water LsvOl Column <br /> DEPTH TO FIRST OBSERVED GROUND WATER <br /> i <br /> DEPTH TO STABILIZED LROUND WATER <br /> Miscellaneous <br /> 2.5 YR 6/2 Color as field checked to Munsell Soil Color Chart <br /> (1975 Edition) <br /> PENETRATION glows required to drive sampler 1 foot into soil . <br /> Standard drive hemmer weight: 140 $oun1s. <br /> Standard drop: 30 inch*$ <br /> [ M <br /> 4¢ <br /> 51 <br /> I <br />