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• Pressure was applied to the vessel with a hand pump and the filtrate directed into the appropriate containers Each filter was used once and discarded Sample Preservation and Handling 9 The following section specifies sample containers, preservation methods, and sample handling procedures Sample Containers and Preservation Sample containers vary with each type of analytical parameter Container types and materials were selected to be nonreactive with the particular analytical parameter tested Sample Handling Sample containers were labeled immediately prior to sample collection Samples were kept cool with cold packs until received by the laboratory At the time of sampling, each sample was logged on a chain-of-custody record that accompanied the sample to the laboratory Samples that required overnight storage prior to shipping to the laboratory were kept coo` (49:elsius) in r- refrigerator ilie refrigerator was kept m a warehouse, Much was locked when not occupied by an EiVICON employee A sample/refrigerator log was kept to record the date and time that samples were placed into and removed from the refrigerator Samples were transferred from EMCON to an approved laboratory by courser or taken directly to the laboratory by the environmental sampler Sample shipments from EMCON to laboratories performing the selected analyses routinely occurred within 24 hours of sample collection Sample Documentation The following procedures were used during sampling and analysis to provide chain-of- custody control during sample handling from collection through storage Sample documentation included the use of the following e Water Sample Field Data Sheets to d Chain-of-custody record sheets for document sampling activities in the documenting possession and transfer of field samples e Labels to identify individual samples ® Laboratory analysis request sheets for documenting analyses to be performed SALIN P]O\OF901AF900020 4DS-95 PAS i A-4 Rev 0,10/25195