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14 August 2001 <br /> AGE-NC Project No 98-0511 <br /> Page 7 of 7 <br /> 4 4 3 Sample Withdrawal <br /> Water samples will be collected from the monitoring wells 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 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 BTEX, TPH-g, fuel oxygenating compounds, and fuel additive analyses will be collected Into <br /> 40-m1 VOA vials containing 0 5 ml of hydrochloric acid as preservative Following collection the <br /> samples will be appropriately labeled and placed on Ice and kept in a cooler until delivered to the <br /> laboratory for analysis Cham-of-custody protocols will be used to document sample custody transfer <br /> from the field to the analytical laboratory A chain-of-custody form will accompany the samples <br /> 45 EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly washed with a solution ofAlconox <br /> and rinsed with clean water prior to use All down-hole drilling and sampling equipment will be <br /> pressure washed prior to the start of each boring <br /> Advanced GeoEnvironmentaf,Inc <br />