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1 1 <br /> 02 August 2001 <br /> AGE-NC Protect No 99-0657 <br /> Page 10 of 10 <br /> However, if the well is purged dry prior to evacuating three casing volumes, a ground water sample <br /> will be collected following 80 percent recovery of ground water within the well or within 1 hour of <br /> well evacuation <br /> 4 7 3 Sample Withdrawal <br /> Water samples will be collected from each monitoring well using a new, pre-cleaned disposable <br /> polyethylene bailer These bailers are disposed of after one use and require no decontaminating, <br /> thereby nunumizing cross contamination due to sampling devices Samples will be drawn and <br /> collected in such a manner that agitation and exposure of the groundwater to the atmosphere is <br /> minimal Sample containers will be filled using the appropriate disposable sampling attachment <br /> which allows controlled flow out of the bottom of the bailer by lifting the check valve <br /> 4 7 4 Sample Handling <br /> • Ground water samples will be collected into laboratory-supplied containers Ground water samples <br /> for TPH-g, TPH-d, BTEX and fuel oxygenate (EPA 8260) analyses will be collected into 40-m1 <br /> VOA vials containing 0 5 ml of hydrochloric acid as a sample preservative and into one-liter amnber <br /> bottles without the preservative for TPH-d analysis Following collection the samples will be <br /> appropriately labeled and placed on ice and kept in a cooler until delivered to the laboratory for <br /> analysis Clain-of-custudy protocols will be used to document sample custody transfer fromthe Reid <br /> to the analytical laboratory A chain-of-custody form will accompany the samples <br /> Advanced Geoltnvironmentei,Inc <br />