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• KLEINFELCER <br /> 5. Physical parameters (pH, electrical conductivity, and temperature) are monitored for <br /> stability while purging. The physical parameter measurements are recorded on purge- <br /> and-sample logs, along with the time and volume of water purged at each measurement. <br /> 6. Samples are collected with a disposable bailer or bladder pump into appropriately <br /> prepared bottles provided by the analytical laboratory. <br /> 7. Samples for metals analysis are usually filtered in the field at the time of collection. <br /> 8. Samples are immediately labeled and placed in an iced sample container. At the end of the <br /> day, the samples are delivered to the analytical laboratory under chain-of-custody control. <br /> 20-YPI-628/2011P180 Page B-7 <br /> 0 2001,Kleinfelder,Inc. July 2,2001 <br />