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s <br /> 31 March 2000 <br /> AGE-NC Project No. 00-0699 <br /> Page 9 of 9 <br /> 4.5.3. 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, therefore minimizing <br /> cross contamination due to sampling devices.Samples will be drawn and collected in such a manner <br /> that agitation and exposure of the groundwater to the atmosphere is minimal. Sample containers will <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 /> 4.5.4. Sample Handling <br /> Ground water samples will be collected into laboratory-supplied containers. Ground water samples <br /> for BTEX,TPH-g, and fuel oxygenates analyses will be collected into 40-mi VOA vials containing <br /> 0.5 ml ofhydrochloric acid as sample preservative.Samples for TPH-d analysis will be collected into <br /> unpreserved 1-liter amber glass containers. Samples for total lead analysis will be collected in <br /> plastic bottles with no preservative.Following collection,the samples will be labeled,placed on ice <br /> and kept in a cooler until delivered to the laboratory for analysis. Chain-of-custody protocols will <br /> be used to document sample custody transfer from the field to the analytical laboratory. <br /> 4.6. EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample purging and collection will be thoroughly washed with a solution <br /> of Alconox and rinsed with clean water prior to each sampling location. All probing rods will be <br /> cleaned prior to advancement at each probe boring location. Hollow-stem augers will be steam- <br /> cleaned prior to each boring. <br /> 4.7. BORING ABANDONMENT <br /> All soil borings borings not completed as monitoring wells will be permanently sealed to prevent <br /> vertical migration of potential contaminants. Soil borings shall be abandoned by backfilling with <br /> bentonite or cement-bentonite slurry from the total depth to surface grade. The PHS-EHD will be <br /> notified for grout inspection at least 48-hours prior to conducting grouting procedures. <br /> Advanced GeoEnviron mental,Inc. <br />