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• Pressure was applied to the vessel with a hand pump and the filtrate directed into the <br /> appropriate containers. Each filter was used once and discarded. <br /> Sample Preservation and Handling <br /> The following section specifies sample containers, preservation methods, and sample <br /> handling procedures. <br /> Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter. Container types and <br /> materials were selected to be nonreactive with the particular analytical parameter tested. <br /> Sample Handling <br /> Sample containers were labeled immediately prior to sample collection. Samples were <br /> kept cool with cold packs until received by the laboratory. At the time of sampling, each <br /> sample was logged on a chain-of-custody record that accompanied the sample to the <br /> . laboratory. <br /> Samples that required overnight storage prior to shipping to the laboratory were kept cool <br /> (40 Celsius) in a refrigerator. The refrigerator was kept in a warehouse which was locked <br /> when not occupied by an Pinnacle employee. A sample/refrigerator log was kept to <br /> record the date and time that samples were placed into and removed from the refrigerator. <br /> Samples were transferred from Pinnacle to an approved laboratory by courier or taken <br /> directly to the laboratory by the environmental sampler. Sample shipments from Pinnacle <br /> to laboratories performing the selected analyses routinely occurred within 24 hours of <br /> sample collection. <br /> Sample Documentation <br /> The following procedures were used during sampling and analysis to provide chain-of- <br /> custody control during sample handling from collection through storage. Sample <br /> documentation included the use of the following: <br /> cP\E:l'rEICHER7\STOCKTONIQTRLY\.STKNQ199.DOC-9511sg:1 A-4 <br />