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la. <br /> 05 February 1999 <br /> AGE-NC Project No. 98-0433 <br /> Page 9of9 <br /> ' be filled using the appropriate disposable sampling attachment which allows controlled flow out of <br /> the bottom of the bailer by lifting up on the check valve. <br /> 4.7.4. Sample Handling <br /> ' Ground water samples will be transferred into laboratory supplied containers. Ground water samples <br /> to be analyzed for TPH=g, BTEX and oxygenated compound analyses will be collected into 40-m1 <br /> VOA vials containing 0.5-m1 of hydrochloric acid (18%) as preservative. Samples to be analyzed <br /> for TPH-d analysis will be collected into 1-liter amber glass containers without the preservative. <br /> Following collection, the properly labeled samples will be placed.on ice and kept in a cooler until <br /> delivered to the laboratory for analysis. Chain-of-custody forms will be used to document sample <br /> custody transfer from the field to the analytical laboratory and will accompany-the samples. <br /> 4.8. 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 the boring. <br /> 1 - <br /> Decontamination water generated during the ground water sampling activities will be contained in <br /> DOT-approved drums which will be appropriately labeled for storage. Drums containing <br /> ' decontamination water will be stored on-site pending appropriate removal and disposal. <br /> ' 4.9. BORING ABANDONMENT <br /> ' All probe borings will be permanently sealed to prevent vertical migration of contaminants. Soil <br /> borings shall be abandoned by backfilling with cement slurry from the total depth to surface grade. <br /> Advanced GeoEnvironmentsl,Inc. <br />