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GEOMATRIX <br /> PROTOCOL <br /> DRILLING AND DESTRUCTION OF SOIL BORINGS <br /> 1.0 INTRODUCTION <br /> This protocol describes the procedures to be followed during the drilling and logging of soil <br /> borings. The information gathered from the exploratory borings will provide information <br /> about geologic conditions, soil engineering properties and/or soil quality. If the soil boring <br /> is utilized for well installation, the well will be installed in accordance with the protocol <br /> INSTALLATION OF WELLS. <br /> The procedures presented herein are intended to be of a general use. As the work <br /> ! progresses and, if warranted, appropriate revisions will be made by the project manager. <br /> Detailed procedures in this protocol may be superseded by applicable regulatory <br /> ` requirements. <br /> L2.0 DRILLING <br /> If required, permits for the drilling of soil borings,will be acquired from the appropriate <br /> agency before drilling is initiated and an underground utility check will be conducted. The <br /> soil borings will be drilled using a rotary, hollow stem auger, or other appropriate method. <br /> In mud rotary borings, appropriate drilling fluid additives, such as bentonite, will be used <br /> to maintain an open hole and to carry cuttings to the surface. However, no organic drilling <br /> fluid additives will be used. The drilling mud will be circulated into a settling tank or basin <br /> located near the boring. Viscosity of the drilling fluid will be assessed periodically by the <br /> driller.and will be controlled throughout the drilling operation to achieve the required <br /> results (hole stability, sample return, and minimum mud.cake along boring wall). Only <br /> Lpotable water will be used as makeup water for drilling fluid. Exploratory borings drilled <br /> ' DRILLING AND DESTRUCTION OF SOIL BORINGS <br /> MSCIGEOMATRX.PRO REVISION DATE: NOVEMBER 1992 Page 1 of 6 <br />