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08 April 2014 <br /> AGE Project No. 07-1537 <br /> Page 6 of 6 <br /> 3.5. BORING ABANDONMENT <br /> All probe borings not completed as wells will be permanently sealed to prevent vertical <br /> migration of potential contaminants. Soil borings shall be abandoned by backfilling with <br /> Portland cement from the total depth to surface grade. <br /> Advanced GeoEnvironmental Inc. <br />