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• 30 June 1999 <br /> AGE-NC Project No 99-0624 <br /> Page 10 of 10 <br /> and kept in a cooler until delivered to the laboratory for analysis Chain-of-custody protocols will <br /> be used to document sample custody transfer from the field to the analytical laboratory A chain-of- <br /> custody form will accompany the samples <br /> 4 7 EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly washed with a solution of Alconox <br /> and rinsed with clean water prior to each sampling location All probing rods will be cleaned prior <br /> to advancement at each probe boring location Hollow-stem augers will be steam-cleaned prior to <br /> each boring <br /> 4 8 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 bentorute 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 pnor to conducting grouting procedures <br /> Advanced GcoEnvironmental,Inc <br />