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20 August 2009 <br /> AGE-NC Project No. 06- 1457 <br /> Page 7 of 7 <br /> 3 .4.3 . Sample Withdrawal <br /> Water samples will be collected from the monitoring well using a disposable polyethylene bailer or <br /> dedicated Teflon tubing used in conjunction with a Waterra inertial pump. Bailers are disposed of <br /> j after one use, requiring no decontaminating and Teflon tubing used with the inertia pump is either <br /> dedicated to each well or changed at each sampling event, thereby minimizing cross contamination <br /> due to sampling devices. Samples will be drawn and collected in such a manner that agitation and <br /> exposure of ground water to the atmosphere are minimal. <br /> III 3 .4 .4 . Sample Handling <br /> it Ground water samples will be collected into laboratory supplied containers . Ground water samples <br /> to be analyzed for the constituents in Section 2.21 . ; samples will be collected into laboratory- <br /> supplied 40-m1 volatile organic analysis (VOA) vials withoutpreservative. Following collection, the <br /> samples will be placed on ice and kept in a cooler until delivered to the laboratory for analysis. Chain <br /> of custody protocols will be used to document sample custody transfer from the field to the analytical <br /> I� laboratory. A chain of custody form will accompany the samples. <br /> 3 . 5 . EQUIPMENT DECONTANIINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution ofAlconox. All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting each boring. <br /> Advanced GeoEnvironmental, Inc. <br />