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28 July 2004 <br /> AGE-NC Project No 99-0657 <br /> Page 7 of 7 <br /> 3 4 4 Sample Handling <br /> Ground water samples will be collected Into laboratory-supplied 40-m1 volatile organic analysis <br /> (VOA) vials containing 0 5-ml of hydrochloric acid as preservative and one-liter amber glass <br /> containers without sample preservative Care will be taken to ensure that visible air bubbles are not <br /> present in the vials after filling and capping Following collection the samples will be appropriately <br /> labeled, placed on Ice and kept in a cooler until delivered to a DHS-certified analytical laboratory <br /> for analysis Cham-of-custody protocols will be used to document sample custody transfer from the <br /> field to the laboratory, a chain-of-custody form will accompany the samples <br /> 3 5 EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution of Alconox All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting each boring <br /> • 3 6 BORING ABANDONMENT <br /> Any soil borings not completed as monitoring wells,will be permanently sealed to prevent vertical <br /> migration of potential contaminants Soil borings shall be abandoned by backfilling with bentonite <br /> or cement-bentonite slurry from the total depth to surface grade The EHD will be notified for grout <br /> inspection at least 72 hours prior to grouting the bonngs <br /> Advanced GeoEnvironmental,Inc <br />