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y <br /> 19 November 1999 <br /> AGE-NC Project No. 99-0604 <br /> Page 10 of 10 <br /> 4.7. BORING ABANDONMENT <br /> All soil probe borings and soil borings not completed as monitoring wells will be permanently sealed <br /> to prevent vertical migration of potential contaminants. Soil borings shall be abandoned by <br /> backfilling with bentonite or cement-bentonite slurry from the total depth to surface grade. The PHS- <br /> EHD will be notified for grout inspection at least 48 hours prior to grout emplacement. <br /> Ad+-arced GeoEnvironmental,Inc. <br />