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water samples were extracted using 3/8 -inch diameter polyethylene tubing fitted with a check valve <br />which was lowered through the hollow center of the push rods into the screen section of the sampler <br />and manually pumped. The ground water samples were poured from the bailer into laboratory - <br />supplied 40-m1 VOA vials containing 0.5-m1 of 18 -percent hydrochloric acid as sample preservative <br />for BTEX, TPH-g, and MTBE analysis. Samples analyzed for TPH-d, TPH-mo, and PCBs were <br />placed into one -liter amber glass containers. <br />Following sample collection, the preserved sample containers were labeled with the boring location, <br />depth, time, date and sampler's initials. Appropriately sealed and labeled samples were placed in a <br />chilled container under ice and transported under chain -of -custody procedure to a DHS -certified <br />laboratory. <br />A.4. EQUIPMENT DECONTAMINATION <br />Prior to sample collection, all sampling tools used for sample collection were thoroughly washed <br />with a solution of Alconox and rinsed with clean water. All probing rods were cleaned prior to <br />advancement at each probe boring location. <br />A.S. BORING ABANDONMENT <br />All probe borings were permanently sealed to prevent vertical migration of any potential <br />contaminants. Soil probe borings were abandoned by backfilling with portland type I/II neat cement <br />slurry from the total depth of the boring to surface grade. <br />Advanced CeoEnvironmental, Inc. <br />