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13 November 2000 <br /> AGE-NC Project No. 98-0481 <br /> Page 10 of 10 <br /> J <br /> filled using the appropriate disposable sampling attachment which allows controlled flow out of the <br /> bottom of the bailer by lifting up on the check valve. <br /> 4.5.4. Sample Handling <br /> Ground water samples will be collected into laboratory-supplied containers. Ground water samples <br /> for BTEX, TPH-g, TPH-d, fuel oxygenates, 1,2-DCA and EDB analyses will be collected into 40-m1 <br /> VOA vials containing 0.5 ml of hydrochloric acid as a sample preservative. Samples for TPH-d <br /> analysis will be collected into 1-liter amber glass containers lacking a sample preservative. <br /> Following collection the samples will be labeled with boring designation, date, time and sampler's <br /> initials and then placed on ice and kept in a cooler until delivered to the laboratory for analysis. <br /> Chain-of-custody protocols will be used to document sample custody transfer from the field to the <br /> analytical laboratory. A chain-of-custody form will accompany the samples. <br /> 4.6. EQUIPMENT DECONTAMINATION <br /> All tools used for sample collection will be thoroughly washed with a solution of Alconox and <br /> rinsed with clean water prior to use. All down-hole drilling equipment will be pressure washed prior <br /> to starting the boring. <br /> 4.7. BORING ABANDONMENT <br /> J <br /> All soil borings will be permanently sealed to prevent vertical migration of contaminants. Soil <br /> borings shall be abandoned by backfilling with bentonite or cement-bentonite slurry from the total <br /> depth to approximately one foot below surface grade. A tremie pipe will be utilized to introduce <br /> cement to the bottom of the open boring. The boring abandonment will be completed at surface <br /> grade with asphalt or concrete. <br /> J <br /> u <br /> Advanced GeoEnvironmental,Inc. <br />