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23 December 2005 <br /> AGE-NC Project No. 04-1045 <br /> Page 6 of 6 <br /> 3.4.3. Sample Withdrawal <br /> Water samples will be collected from the monitoring well using a dedicated teflon tubing used in <br /> conjunction with the inertia pump. The teflon tubing used with the inertia pump is either dedicated <br /> to each well or changed at each sampling event, thereby minimizing cross contamination due to <br /> sampling devices.Samples will be drawn and collected in such a manner that agitation and exposure <br /> of the groundwater to the atmosphere are minimal. <br /> 3.4.4. Sample Handling <br /> Ground water samples will be collected into laboratory supplied containers.Ground water samples <br /> to be analyzed for TPH-g, BTEX and fuel additives will be collected into 40-m1 volatile organic <br /> analysis(VOA)vials containing 0.5-m1 of hydrochloric acid as preservative.Following collection, <br /> the samples will be placed on ice and kept in a cooler until delivered to the laboratory for analysis. <br /> Chain-of-custody protocols will be used to document sample custody transfer from the field to the <br /> analytical laboratory. A chain-of-custody form will accompany the samples. <br /> 3.5. EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br /> All sampling tools used for sample collection, except for disposable bailers, will be thoroughly <br /> rinsed with clean water after being washed with a solution of Alconox. All down-hole drilling <br /> equipment will be pressure washed prior to starting each boring. Cuttings generated during drilling <br /> and rinseate generated during drilling and ground water sampling activities will be containerized in <br /> properly labeled DOT-approved 55-gallon drums,and stored on-site in an area lacking public access. <br /> Disposal alternatives will be evaluated based on results of soil and water analysis. <br /> Advanced GeoEnvironmental,Inc. <br />