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X L I I N <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 <br />the day, the samples are delivered to the analytical laboratory under chain -of -custody <br />control. <br />20-YP1-611/2011P181 Page B-7 <br />Copyright 2001, Kleinfelder, Inc. July 3, 2001 <br />