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• 21 September 1998 <br /> AGE-NC Project No 97-0290 <br /> Page 8 of 8 <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 /> 3 8 4 Sample Handling <br /> Ground water samples will be collected into laboratory supplied containers Ground water samples <br /> for BTEX, TPH-g, and oxygenates analyses will be collected into 40-m1 VOA vials containing <br /> 0 5-ml of hydrochloric acid as preservative Samples for TPH-d analysis will be collected into <br /> unpreserved 1-liter amber glass containers Following collection the samples will be placed on ice <br /> and kept in a cooler until delivered to the laboratory for analysis Cham-of-custody protocols will <br /> be used to document sample custody transfer from the field to the analytical laboratory A chain-of- <br /> custody form will accompany the samples <br /> 3 9 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 /> Advanced Geo£nviranmental,Inc <br />