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17 April 2006 <br /> AGE-NC Project No. 04-1207 <br /> Page 9 of 9 <br /> washed with a solution of Alconox. All probing rods will be cleaned prior to advancement at each <br /> probe boring location, and all down-hole and drilling equipment will be pressure washed prior to <br /> starting each boring.Cuttings and rinseate generated during drilling will be containerized in properly <br /> labeled,Department of Transportation(DOT)-approved 55-gallon drums and stored on-site.Disposal <br /> alternatives will be evaluated based on the results of soil and ground water analysis. <br /> 4.5. BORING ABANDONMENT <br /> All probe borings will be permanently sealed to prevent vertical migration of potential contaminants. <br /> Soil borings shall be abandoned by backfilling with portland cement utilizing a tremie pipe from <br /> total depth to surface grade. <br /> Advanced GeoEnvironmental,Inc. <br />