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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />2.5 YR 6/2 <br />M <br />Explanation of Symbols on <br />Logs of Exploratory Borings <br />Denotes color as field checked to <br />Munsell Soil Color Charts (1975 <br />Edition) or GSA Rock Color Chart <br />Nom* Denotes sample collected <br />SL Denotes depth to first observed <br />ground water <br />= Denotes depth to stabilized ground <br />water <br />Penetration Blows required to drive sample <br />1 foot into soil. Standard drive <br />hammer weight - 140 pounds, drop - <br />30 inches <br />to <br />WaIrts M WKWIA'V I ItI <br />Solid -wall well casi• <br />Surface Seal <br />Gravel pack seal <br />Gravel pack <br />Perforated well casing <br />Bottom seal or fill <br />