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E <br /> inverted and tapped to verify that it contained no air bubbles. The sample containers for <br /> other parameters were filled, filtered as required, and capped. <br /> When required, dissolved concentrations of metals were determined using appropriate <br /> field filtration techniques. The sample was filtered by emptying the contents of the Teflon <br /> bailer into a pressure transfer vessel. A disposable 0.45-micron acrylic copolymer filter <br /> was threaded.onto the transfer vessel at the discharge point, and the vessel-was sealed. <br /> 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, preservations methods, and sample <br /> a <br /> handling procedures. <br /> f <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 /> i <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 an ARCO chain-of-custody record that accompanied the sample to <br /> the laboratory. <br /> Samples that'required overnight storage prior to shipping.to the.laboratory were kept cool <br /> (4°C) in a refrigerator. Therefrigerator was kept in a warehouse, which was locked when <br /> not occupied by an IT employee. A sample/refrigerator log was kept to record the date and <br /> time that samples were placed into and removed from the refrigerator. <br /> Samples were transferred from FT to an ARCO-approved laboratory by courier or taken <br /> directly to the laboratory by the environmental sampler. Sample shipments from IT to <br /> laboratories performing the selected analyses routinely occurred within 24 hours of sample <br /> collection. r. <br /> CP:\N:ICamPk\DatslQMR\ARCOlistg0012186Qi00.DOC-98Vt:, IT Corporation <br /> A-4 05/09/00 I <br /> I <br /> i <br />