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23 May 2001 <br /> AGE-NC Project No. 99-0592 <br /> Page 7 of 8 <br /> 4.4.3. Sample Withdrawal <br /> Water samples will be collected from the monitoring well using a disposable polyethylene bailer. <br /> These bailers are disposed of after one use and require no decontaminating,thereby minimizing cross <br /> contamination due to sampling devices. Samples will be drawn and collected in such a manner that <br /> agitation and exposure of the ground water to the atmosphere is minimal. Sample containers will be <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 /> 4.4.4. Sample Handling <br /> Ground water samples will be collected into laboratory supplied containers. Ground water samples <br /> for TPH-g, BTEX, EDB, 1,2-DCA and fuel oxygenate analyses will be collected into 40-m1 VOA <br /> vials containing 0.5 ml hydrochloric acid as preservative. Ground water samples for TPH-d analyses <br /> will be collected into 1-liter glass ambers without sample preservative. Following collection the <br /> samples will be placed on ice and.kept in a cooler until delivered to the laboratory for analysis. <br /> Chain-of-custody forms will be used to document sample custody transfer from the field to the <br /> analytical laboratory, and accompany the samples. <br /> 4.5. 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 use at each sampling location. Hollow-stem augers will be <br /> steam-cleaned prior to advancing each pilot boring. <br /> Advanced GeoEnvironmental,Inc. <br />