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2.5 YR 6/2 Denotes color as field checked to Munsell <br />Soil Color Charts (1975 Edition) or GSA <br />Rock Color Chart <br />Denotes undisturbed sample <br />IK Denotes disturbed sample (bag sample) <br />® Denotes depth to first observed ground water <br />Denotes depth to static ground water <br />Denotes sand pack interval <br />Denotes screened/perforated interval <br />Penetration Blows required to drive sampler 1 foot into <br />soil are indicated on the logs. Drive hammer <br />weight - 140 pounds, drop - 30 inches. <br />